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Finding the Fourth Proportional to 16,939, 23,375.08 and 9,385.32

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Solution

The fourth proportional to 16,939, 23,375.08 and 9,385.32 is: 12,951.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,939 : 23,375.08 = 9,385.32 : x
  2. Step 2: Convert to fraction form
    16,939/23,375.08 = 9,385.32/x
  3. Step 3: Cross multiply
    16,939x = 23,375.08 × 9,385.32
  4. Step 4: Simplify right side
    16,939x = 219,382,605.83
  5. Step 5: Solve for x
    x = 219,382,605.83/16,939
  6. Step 6: Final answer
    x = 12,951.33

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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.