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Finding the Fourth Proportional to 18,135.20, 27,166.35 and 12,230.30

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Solution

The fourth proportional to 18,135.20, 27,166.35 and 12,230.30 is: 18,320.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.20 : 27,166.35 = 12,230.30 : x
  2. Step 2: Convert to fraction form
    18,135.20/27,166.35 = 12,230.30/x
  3. Step 3: Cross multiply
    18,135.20x = 27,166.35 × 12,230.30
  4. Step 4: Simplify right side
    18,135.20x = 332,252,610.41
  5. Step 5: Solve for x
    x = 332,252,610.41/18,135.20
  6. Step 6: Final answer
    x = 18,320.87

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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.