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Finding the Fourth Proportional to 18,279.17, 27,397.73 and 8,397.69

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Solution

The fourth proportional to 18,279.17, 27,397.73 and 8,397.69 is: 12,586.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.17 : 27,397.73 = 8,397.69 : x
  2. Step 2: Convert to fraction form
    18,279.17/27,397.73 = 8,397.69/x
  3. Step 3: Cross multiply
    18,279.17x = 27,397.73 × 8,397.69
  4. Step 4: Simplify right side
    18,279.17x = 230,077,561.50
  5. Step 5: Solve for x
    x = 230,077,561.50/18,279.17
  6. Step 6: Final answer
    x = 12,586.87

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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.