## Quick Answer for what is 30 percent of 13 = 3.9

### Calculate Percent of 30% of 13 – Step by Step

Today, we’re going to explore the fascinating world of percentage calculations, and I’m super excited to help you understand how to find “what is 30 percent of 13.”

First of all, let’s break down the problem. Percentages are a way of expressing a portion of a whole as a fraction of 100. In our case, we want to find 30 percent of 13. So, we’re looking for 30% of 13.

#### Method 1: The Proportional Method

One way to solve this is by setting up a proportion. We know that 30% is the same as 30/100 or 0.30 as a decimal. We can set up the proportion like this:

(30/100) = (x/13)

Now, to find ‘x,’ which represents 30 percent of 13, we cross-multiply and solve for ‘x’:

30 * 13 = 100 * x

390 = 100x

Next, we divide both sides by 100 to isolate ‘x’:

x = 390/100

**x = 3.9**

**So, 30 percent of 13 is 3.9.**

#### Method 2: Using Decimal Method

Another quick way is to convert 30% to a decimal (0.30) and then multiply it by 13:

**0.30 * 13 = 3.9**

**Again, we get 3.9 as the result.**

Real-Life Example: Let’s imagine you have $13, and you want to calculate 30% of that amount. Well, using the first method, you’d find that 30 percent of $13 is $3.90. And with the second method, you’d arrive at the same answer, **$3.90**.