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Finding the Fourth Proportional to 25,957.88, 38,943.32 and 7,489.88

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Solution

The fourth proportional to 25,957.88, 38,943.32 and 7,489.88 is: 11,236.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,957.88 : 38,943.32 = 7,489.88 : x
  2. Step 2: Convert to fraction form
    25,957.88/38,943.32 = 7,489.88/x
  3. Step 3: Cross multiply
    25,957.88x = 38,943.32 × 7,489.88
  4. Step 4: Simplify right side
    25,957.88x = 291,680,561.44
  5. Step 5: Solve for x
    x = 291,680,561.44/25,957.88
  6. Step 6: Final answer
    x = 11,236.69

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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.