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Finding the Fourth Proportional to 12,585.63, 18,874.11 and 5,560.90

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Solution

The fourth proportional to 12,585.63, 18,874.11 and 5,560.90 is: 8,339.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.63 : 18,874.11 = 5,560.90 : x
  2. Step 2: Convert to fraction form
    12,585.63/18,874.11 = 5,560.90/x
  3. Step 3: Cross multiply
    12,585.63x = 18,874.11 × 5,560.90
  4. Step 4: Simplify right side
    12,585.63x = 104,957,118.13
  5. Step 5: Solve for x
    x = 104,957,118.13/12,585.63
  6. Step 6: Final answer
    x = 8,339.44

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Double scale
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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.