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Finding the Fourth Proportional to 18,156.86, 27,196.99 and 8,304.42

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Solution

The fourth proportional to 18,156.86, 27,196.99 and 8,304.42 is: 12,439.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.86 : 27,196.99 = 8,304.42 : x
  2. Step 2: Convert to fraction form
    18,156.86/27,196.99 = 8,304.42/x
  3. Step 3: Cross multiply
    18,156.86x = 27,196.99 × 8,304.42
  4. Step 4: Simplify right side
    18,156.86x = 225,855,227.70
  5. Step 5: Solve for x
    x = 225,855,227.70/18,156.86
  6. Step 6: Final answer
    x = 12,439.11

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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.