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Finding the Fourth Proportional to 16,938.75, 23,375.43 and 9,385.11

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Solution

The fourth proportional to 16,938.75, 23,375.43 and 9,385.11 is: 12,951.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,938.75 : 23,375.43 = 9,385.11 : x
  2. Step 2: Convert to fraction form
    16,938.75/23,375.43 = 9,385.11/x
  3. Step 3: Cross multiply
    16,938.75x = 23,375.43 × 9,385.11
  4. Step 4: Simplify right side
    16,938.75x = 219,380,981.85
  5. Step 5: Solve for x
    x = 219,380,981.85/16,938.75
  6. Step 6: Final answer
    x = 12,951.43

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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.