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Finding the Fourth Proportional to 11,685.70, 17,508.61 and 6,425.12

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Solution

The fourth proportional to 11,685.70, 17,508.61 and 6,425.12 is: 9,626.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.70 : 17,508.61 = 6,425.12 : x
  2. Step 2: Convert to fraction form
    11,685.70/17,508.61 = 6,425.12/x
  3. Step 3: Cross multiply
    11,685.70x = 17,508.61 × 6,425.12
  4. Step 4: Simplify right side
    11,685.70x = 112,494,800.61
  5. Step 5: Solve for x
    x = 112,494,800.61/11,685.70
  6. Step 6: Final answer
    x = 9,626.71

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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.