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Finding the Fourth Proportional to 29,340, 40,489.22 and 15,911.25

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Solution

The fourth proportional to 29,340, 40,489.22 and 15,911.25 is: 21,957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,340 : 40,489.22 = 15,911.25 : x
  2. Step 2: Convert to fraction form
    29,340/40,489.22 = 15,911.25/x
  3. Step 3: Cross multiply
    29,340x = 40,489.22 × 15,911.25
  4. Step 4: Simplify right side
    29,340x = 644,234,101.73
  5. Step 5: Solve for x
    x = 644,234,101.73/29,340
  6. Step 6: Final answer
    x = 21,957.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.