Finding the Fourth Proportional to 19,720,209.40, 29,580,314.10 and 14,303,447.80
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Solution
The fourth proportional to 19,720,209.40, 29,580,314.10 and 14,303,447.80 is: 21,455,171.70
Step by Step Solution
- Step 1: Write the proportion equation
19,720,209.40 : 29,580,314.10 = 14,303,447.80 : x - Step 2: Convert to fraction form
19,720,209.40/29,580,314.10 = 14,303,447.80/x - Step 3: Cross multiply
19,720,209.40x = 29,580,314.10 × 14,303,447.80 - Step 4: Simplify right side
19,720,209.40x = 423,100,478,636,954 - Step 5: Solve for x
x = 423,100,478,636,954/19,720,209.40 - Step 6: Final answer
x = 21,455,171.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.