Finding the Fourth Proportional to 21,001,645.70, 31,502,468.55 and 16,750,117.70
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Solution
The fourth proportional to 21,001,645.70, 31,502,468.55 and 16,750,117.70 is: 25,125,176.55
Step by Step Solution
- Step 1: Write the proportion equation
21,001,645.70 : 31,502,468.55 = 16,750,117.70 : x - Step 2: Convert to fraction form
21,001,645.70/31,502,468.55 = 16,750,117.70/x - Step 3: Cross multiply
21,001,645.70x = 31,502,468.55 × 16,750,117.70 - Step 4: Simplify right side
21,001,645.70x = 527,670,056,053,048.31 - Step 5: Solve for x
x = 527,670,056,053,048.31/21,001,645.70 - Step 6: Final answer
x = 25,125,176.55
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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.