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Finding the Fourth Proportional to 12,704.67, 17,532.97 and 7,115.71

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Solution

The fourth proportional to 12,704.67, 17,532.97 and 7,115.71 is: 9,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,704.67 : 17,532.97 = 7,115.71 : x
  2. Step 2: Convert to fraction form
    12,704.67/17,532.97 = 7,115.71/x
  3. Step 3: Cross multiply
    12,704.67x = 17,532.97 × 7,115.71
  4. Step 4: Simplify right side
    12,704.67x = 124,759,529.96
  5. Step 5: Solve for x
    x = 124,759,529.96/12,704.67
  6. Step 6: Final answer
    x = 9,819.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.