What is 18.6 percent of 3.9 - 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 3.9 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 3.9 is 100%, so we can write it down as 3.9=100%.
4. We know, that x is 18.6% of the output value, so we can write it down as x=18.6%.
5. Now we have two simple equations:
1) 3.9=100%
2) x=18.6%
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:
3.9/x=100%/18.6%
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 18.6% of 3.9

3.9/x=100/18.6
(3.9/x)*x=(100/18.6)*x       - we multiply both sides of the equation by x
3.9=5.3763440860215*x       - we divide both sides of the equation by (5.3763440860215) to get x
3.9/5.3763440860215=x
0.7254=x
x=0.7254

now we have:
18.6% of 3.9=0.7254