Home / 21,092.39-31,631.13-9,251.91

Finding the Fourth Proportional to 21,092.39, 31,631.13 and 9,251.91

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Solution

The fourth proportional to 21,092.39, 31,631.13 and 9,251.91 is: 13,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092.39 : 31,631.13 = 9,251.91 : x
  2. Step 2: Convert to fraction form
    21,092.39/31,631.13 = 9,251.91/x
  3. Step 3: Cross multiply
    21,092.39x = 31,631.13 × 9,251.91
  4. Step 4: Simplify right side
    21,092.39x = 292,648,367.96
  5. Step 5: Solve for x
    x = 292,648,367.96/21,092.39
  6. Step 6: Final answer
    x = 13,874.60

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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.