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Finding the Fourth Proportional to 15,146.60, 22,721.22 and 5,285.72

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Solution

The fourth proportional to 15,146.60, 22,721.22 and 5,285.72 is: 7,929.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,146.60 : 22,721.22 = 5,285.72 : x
  2. Step 2: Convert to fraction form
    15,146.60/22,721.22 = 5,285.72/x
  3. Step 3: Cross multiply
    15,146.60x = 22,721.22 × 5,285.72
  4. Step 4: Simplify right side
    15,146.60x = 120,098,006.98
  5. Step 5: Solve for x
    x = 120,098,006.98/15,146.60
  6. Step 6: Final answer
    x = 7,929.04

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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.