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Finding the Fourth Proportional to 18,275.53, 27,404.65 and 8,411.89

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Solution

The fourth proportional to 18,275.53, 27,404.65 and 8,411.89 is: 12,613.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.53 : 27,404.65 = 8,411.89 : x
  2. Step 2: Convert to fraction form
    18,275.53/27,404.65 = 8,411.89/x
  3. Step 3: Cross multiply
    18,275.53x = 27,404.65 × 8,411.89
  4. Step 4: Simplify right side
    18,275.53x = 230,524,722.21
  5. Step 5: Solve for x
    x = 230,524,722.21/18,275.53
  6. Step 6: Final answer
    x = 12,613.85

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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.