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Finding the Fourth Proportional to 18,630.15, 27,949.79 and 15,304.02

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Solution

The fourth proportional to 18,630.15, 27,949.79 and 15,304.02 is: 22,959.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.15 : 27,949.79 = 15,304.02 : x
  2. Step 2: Convert to fraction form
    18,630.15/27,949.79 = 15,304.02/x
  3. Step 3: Cross multiply
    18,630.15x = 27,949.79 × 15,304.02
  4. Step 4: Simplify right side
    18,630.15x = 427,744,145.16
  5. Step 5: Solve for x
    x = 427,744,145.16/18,630.15
  6. Step 6: Final answer
    x = 22,959.78

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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.