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Finding the Fourth Proportional to 8,554.80, 12,832.20 and 8,481.90

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Solution

The fourth proportional to 8,554.80, 12,832.20 and 8,481.90 is: 12,722.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,554.80 : 12,832.20 = 8,481.90 : x
  2. Step 2: Convert to fraction form
    8,554.80/12,832.20 = 8,481.90/x
  3. Step 3: Cross multiply
    8,554.80x = 12,832.20 × 8,481.90
  4. Step 4: Simplify right side
    8,554.80x = 108,841,437.18
  5. Step 5: Solve for x
    x = 108,841,437.18/8,554.80
  6. Step 6: Final answer
    x = 12,722.85

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Similar ratio
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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.