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Finding the Fourth Proportional to 20,442.30, 30,664.05 and 8,747.92

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Solution

The fourth proportional to 20,442.30, 30,664.05 and 8,747.92 is: 13,122.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.30 : 30,664.05 = 8,747.92 : x
  2. Step 2: Convert to fraction form
    20,442.30/30,664.05 = 8,747.92/x
  3. Step 3: Cross multiply
    20,442.30x = 30,664.05 × 8,747.92
  4. Step 4: Simplify right side
    20,442.30x = 268,246,656.28
  5. Step 5: Solve for x
    x = 268,246,656.28/20,442.30
  6. Step 6: Final answer
    x = 13,122.14

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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.