What is 28.1 percent of 15.4 - 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 15.4 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 15.4 is 100%, so we can write it down as 15.4=100%.
4. We know, that x is 28.1% of the output value, so we can write it down as x=28.1%.
5. Now we have two simple equations:
1) 15.4=100%
2) x=28.1%
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:
15.4/x=100%/28.1%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 28.1% of 15.4

15.4/x=100/28.1
(15.4/x)*x=(100/28.1)*x       - we multiply both sides of the equation by x
15.4=3.55871886121*x       - we divide both sides of the equation by (3.55871886121) to get x
15.4/3.55871886121=x
4.3274=x
x=4.3274

now we have:
28.1% of 15.4=4.3274