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Finding the Fourth Proportional to 22,910.60, 34,349.70 and 8,865.20

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Solution

The fourth proportional to 22,910.60, 34,349.70 and 8,865.20 is: 13,291.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,910.60 : 34,349.70 = 8,865.20 : x
  2. Step 2: Convert to fraction form
    22,910.60/34,349.70 = 8,865.20/x
  3. Step 3: Cross multiply
    22,910.60x = 34,349.70 × 8,865.20
  4. Step 4: Simplify right side
    22,910.60x = 304,516,960.44
  5. Step 5: Solve for x
    x = 304,516,960.44/22,910.60
  6. Step 6: Final answer
    x = 13,291.53

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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.