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Finding the Fourth Proportional to 18,385.05, 27,588.92 and 8,522.49

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Solution

The fourth proportional to 18,385.05, 27,588.92 and 8,522.49 is: 12,788.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.05 : 27,588.92 = 8,522.49 : x
  2. Step 2: Convert to fraction form
    18,385.05/27,588.92 = 8,522.49/x
  3. Step 3: Cross multiply
    18,385.05x = 27,588.92 × 8,522.49
  4. Step 4: Simplify right side
    18,385.05x = 235,126,252.20
  5. Step 5: Solve for x
    x = 235,126,252.20/18,385.05
  6. Step 6: Final answer
    x = 12,788.99

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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.