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Finding the Fourth Proportional to 22,906.10, 34,359.15 and 20,486.90

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Solution

The fourth proportional to 22,906.10, 34,359.15 and 20,486.90 is: 30,730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,906.10 : 34,359.15 = 20,486.90 : x
  2. Step 2: Convert to fraction form
    22,906.10/34,359.15 = 20,486.90/x
  3. Step 3: Cross multiply
    22,906.10x = 34,359.15 × 20,486.90
  4. Step 4: Simplify right side
    22,906.10x = 703,912,470.14
  5. Step 5: Solve for x
    x = 703,912,470.14/22,906.10
  6. Step 6: Final answer
    x = 30,730.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.