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Finding the Fourth Proportional to 16,939.10, 23,375.64 and 9,385.40

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Solution

The fourth proportional to 16,939.10, 23,375.64 and 9,385.40 is: 12,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,939.10 : 23,375.64 = 9,385.40 : x
  2. Step 2: Convert to fraction form
    16,939.10/23,375.64 = 9,385.40/x
  3. Step 3: Cross multiply
    16,939.10x = 23,375.64 × 9,385.40
  4. Step 4: Simplify right side
    16,939.10x = 219,389,731.66
  5. Step 5: Solve for x
    x = 219,389,731.66/16,939.10
  6. Step 6: Final answer
    x = 12,951.68

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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.