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Finding the Fourth Proportional to 18,591.48, 25,650 and 11,881.04

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Solution

The fourth proportional to 18,591.48, 25,650 and 11,881.04 is: 16,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.48 : 25,650 = 11,881.04 : x
  2. Step 2: Convert to fraction form
    18,591.48/25,650 = 11,881.04/x
  3. Step 3: Cross multiply
    18,591.48x = 25,650 × 11,881.04
  4. Step 4: Simplify right side
    18,591.48x = 304,748,676
  5. Step 5: Solve for x
    x = 304,748,676/18,591.48
  6. Step 6: Final answer
    x = 16,391.85

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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.