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Finding the Fourth Proportional to 22,591.92, 31,173.87 and 12,519.87

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Solution

The fourth proportional to 22,591.92, 31,173.87 and 12,519.87 is: 17,275.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,591.92 : 31,173.87 = 12,519.87 : x
  2. Step 2: Convert to fraction form
    22,591.92/31,173.87 = 12,519.87/x
  3. Step 3: Cross multiply
    22,591.92x = 31,173.87 × 12,519.87
  4. Step 4: Simplify right side
    22,591.92x = 390,292,799.80
  5. Step 5: Solve for x
    x = 390,292,799.80/22,591.92
  6. Step 6: Final answer
    x = 17,275.77

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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.