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Finding the Fourth Proportional to 15,179.70, 22,769.55 and 9,930.90

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Solution

The fourth proportional to 15,179.70, 22,769.55 and 9,930.90 is: 14,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.70 : 22,769.55 = 9,930.90 : x
  2. Step 2: Convert to fraction form
    15,179.70/22,769.55 = 9,930.90/x
  3. Step 3: Cross multiply
    15,179.70x = 22,769.55 × 9,930.90
  4. Step 4: Simplify right side
    15,179.70x = 226,122,124.10
  5. Step 5: Solve for x
    x = 226,122,124.10/15,179.70
  6. Step 6: Final answer
    x = 14,896.35

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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.