Home / 22,778.38-34,178.50-12,390.13

Finding the Fourth Proportional to 22,778.38, 34,178.50 and 12,390.13

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Solution

The fourth proportional to 22,778.38, 34,178.50 and 12,390.13 is: 18,591.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,778.38 : 34,178.50 = 12,390.13 : x
  2. Step 2: Convert to fraction form
    22,778.38/34,178.50 = 12,390.13/x
  3. Step 3: Cross multiply
    22,778.38x = 34,178.50 × 12,390.13
  4. Step 4: Simplify right side
    22,778.38x = 423,475,887.31
  5. Step 5: Solve for x
    x = 423,475,887.31/22,778.38
  6. Step 6: Final answer
    x = 18,591.14

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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.