13.28 is what percent of 131.21 - 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 131.21 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 131.21, so we can write it down as 100%=131.21.
4. We know, that x% equals 13.28 of the output value, so we can write it down as x%=13.28.
5. Now we have two simple equations:
1) 100%=131.21
2) x%=13.28
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%=131.21/13.28
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 13.28 is what percent of 131.21

100%/x%=131.21/13.28
(100/x)*x=(131.21/13.28)*x       - we multiply both sides of the equation by x
100=9.8802710843374*x       - we divide both sides of the equation by (9.8802710843374) to get x
100/9.8802710843374=x
10.121179788126=x
x=10.121179788126

now we have:
13.28 is 10.121179788126% of 131.21