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Finding the Fourth Proportional to 17,785.68, 26,691.67 and 8,425.71

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Solution

The fourth proportional to 17,785.68, 26,691.67 and 8,425.71 is: 12,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,785.68 : 26,691.67 = 8,425.71 : x
  2. Step 2: Convert to fraction form
    17,785.68/26,691.67 = 8,425.71/x
  3. Step 3: Cross multiply
    17,785.68x = 26,691.67 × 8,425.71
  4. Step 4: Simplify right side
    17,785.68x = 224,896,332.74
  5. Step 5: Solve for x
    x = 224,896,332.74/17,785.68
  6. Step 6: Final answer
    x = 12,644.80

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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.