How do you find the part of a whole for a given percent?

Example 1:	To find the amount that represents a
	percent of a number:

18% of $36

• First, set up a proportion. The percent always belongs in the fraction over 100. Remember 18% =

  

• Then multiply the numerator of one fraction and the denominator of the other fraction.

  

  

• Since 36 x 18 = 648, you need to find the number that 100 can be multiplied by to equal 648.

  

  

• If 100 times a number equals 648, then you can divide 648 by 100 to find the missing value.

  

  

• The number 6.48 completes the fraction that is equal to .

  

  18% of $36 is $6.48