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Finding the Fourth Proportional to 17,687.70, 24,408.42 and 9,729.85

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Solution

The fourth proportional to 17,687.70, 24,408.42 and 9,729.85 is: 13,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,687.70 : 24,408.42 = 9,729.85 : x
  2. Step 2: Convert to fraction form
    17,687.70/24,408.42 = 9,729.85/x
  3. Step 3: Cross multiply
    17,687.70x = 24,408.42 × 9,729.85
  4. Step 4: Simplify right side
    17,687.70x = 237,490,265.34
  5. Step 5: Solve for x
    x = 237,490,265.34/17,687.70
  6. Step 6: Final answer
    x = 13,426.86

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1.5x scale

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.