Finding the Fourth Proportional to 21,712,354.97, 29,965,441.12 and 12,420,781.58
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Solution
The fourth proportional to 21,712,354.97, 29,965,441.12 and 12,420,781.58 is: 17,142,046.53
Step by Step Solution
- Step 1: Write the proportion equation
21,712,354.97 : 29,965,441.12 = 12,420,781.58 : x - Step 2: Convert to fraction form
21,712,354.97/29,965,441.12 = 12,420,781.58/x - Step 3: Cross multiply
21,712,354.97x = 29,965,441.12 × 12,420,781.58 - Step 4: Simplify right side
21,712,354.97x = 372,194,199,143,732.19 - Step 5: Solve for x
x = 372,194,199,143,732.19/21,712,354.97 - Step 6: Final answer
x = 17,142,046.53
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.