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Finding the Fourth Proportional to 18,135.11, 27,211.04 and 8,277.41

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Solution

The fourth proportional to 18,135.11, 27,211.04 and 8,277.41 is: 12,419.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.11 : 27,211.04 = 8,277.41 : x
  2. Step 2: Convert to fraction form
    18,135.11/27,211.04 = 8,277.41/x
  3. Step 3: Cross multiply
    18,135.11x = 27,211.04 × 8,277.41
  4. Step 4: Simplify right side
    18,135.11x = 225,236,934.61
  5. Step 5: Solve for x
    x = 225,236,934.61/18,135.11
  6. Step 6: Final answer
    x = 12,419.94

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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.