Finding the Fourth Proportional to 21,387,782.20, 32,081,673.30 and 16,610,207.80
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Solution
The fourth proportional to 21,387,782.20, 32,081,673.30 and 16,610,207.80 is: 24,915,311.70
Step by Step Solution
- Step 1: Write the proportion equation
21,387,782.20 : 32,081,673.30 = 16,610,207.80 : x - Step 2: Convert to fraction form
21,387,782.20/32,081,673.30 = 16,610,207.80/x - Step 3: Cross multiply
21,387,782.20x = 32,081,673.30 × 16,610,207.80 - Step 4: Simplify right side
21,387,782.20x = 532,883,260,084,711.75 - Step 5: Solve for x
x = 532,883,260,084,711.75/21,387,782.20 - Step 6: Final answer
x = 24,915,311.70
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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.