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Finding the Fourth Proportional to 13,874.15, 20,755.95 and 12,046.79

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Solution

The fourth proportional to 13,874.15, 20,755.95 and 12,046.79 is: 18,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,874.15 : 20,755.95 = 12,046.79 : x
  2. Step 2: Convert to fraction form
    13,874.15/20,755.95 = 12,046.79/x
  3. Step 3: Cross multiply
    13,874.15x = 20,755.95 × 12,046.79
  4. Step 4: Simplify right side
    13,874.15x = 250,042,577.61
  5. Step 5: Solve for x
    x = 250,042,577.61/13,874.15
  6. Step 6: Final answer
    x = 18,022.19

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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.