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Using Proportion to Find the percent of a Number
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> Finding Percent of a Number Proportion Method < you are here
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Finding the percent of a
number
Examples: What  is 15% of 40? or  
what is 35% of 120?

Finding the percent
Example: What percent of 45 is 8?

Finding percent of the whole
Example: What number is  30% of
100%
Example: What percent of 20 is 7?
The set should look like the picture below
percent proportion method
Note: The whole is also call the base
7 appears with the word is, it's the PART so it goes at
the top
20 appears with the word of so it goes at the bottom
cross pproduct
Find the cross product of the proportion
Missing percent = 100 x 7 divided by 20.
100 x 7 = 700
700  d  20 = 35
7 is 35% of 20
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video
Using Proportion to Find the percent of a Number