Finding the Fourth Proportional to 21,534,565.47, 29,712,588.99 and 12,241,401.05
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Solution
The fourth proportional to 21,534,565.47, 29,712,588.99 and 12,241,401.05 is: 16,890,227.87
Step by Step Solution
- Step 1: Write the proportion equation
21,534,565.47 : 29,712,588.99 = 12,241,401.05 : x - Step 2: Convert to fraction form
21,534,565.47/29,712,588.99 = 12,241,401.05/x - Step 3: Cross multiply
21,534,565.47x = 29,712,588.99 × 12,241,401.05 - Step 4: Simplify right side
21,534,565.47x = 363,723,717,911,841.50 - Step 5: Solve for x
x = 363,723,717,911,841.50/21,534,565.47 - Step 6: Final answer
x = 16,890,227.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.