3.4 is what percent of 15.72 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 15.72 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 15.72, so we can write it down as 100%=15.72.
4. We know, that x% equals 3.4 of the output value, so we can write it down as x%=3.4.
5. Now we have two simple equations:
1) 100%=15.72
2) x%=3.4
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=15.72/3.4
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 3.4 is what percent of 15.72

100%/x%=15.72/3.4
(100/x)*x=(15.72/3.4)*x       - we multiply both sides of the equation by x
100=4.6235294117647*x       - we divide both sides of the equation by (4.6235294117647) to get x
100/4.6235294117647=x
21.628498727735=x
x=21.628498727735

now we have:
3.4 is 21.628498727735% of 15.72