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Finding the Fourth Proportional to 18,446.25, 27,677.49 and 9,679.11

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Solution

The fourth proportional to 18,446.25, 27,677.49 and 9,679.11 is: 14,522.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,446.25 : 27,677.49 = 9,679.11 : x
  2. Step 2: Convert to fraction form
    18,446.25/27,677.49 = 9,679.11/x
  3. Step 3: Cross multiply
    18,446.25x = 27,677.49 × 9,679.11
  4. Step 4: Simplify right side
    18,446.25x = 267,893,470.23
  5. Step 5: Solve for x
    x = 267,893,470.23/18,446.25
  6. Step 6: Final answer
    x = 14,522.92

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1.5x scale

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.