15.15 is what percent of 12720.9 - 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 12720.9 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 12720.9, so we can write it down as 100%=12720.9.
4. We know, that x% equals 15.15 of the output value, so we can write it down as x%=15.15.
5. Now we have two simple equations:
1) 100%=12720.9
2) x%=15.15
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%=12720.9/15.15
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 15.15 is what percent of 12720.9

100%/x%=12720.9/15.15
(100/x)*x=(12720.9/15.15)*x       - we multiply both sides of the equation by x
100=839.66336633663*x       - we divide both sides of the equation by (839.66336633663) to get x
100/839.66336633663=x
0.11909534702733=x
x=0.11909534702733

now we have:
15.15 is 0.11909534702733% of 12720.9