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Finding the Fourth Proportional to 12,836.92, 17,715 and 7,531.84

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Solution

The fourth proportional to 12,836.92, 17,715 and 7,531.84 is: 10,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.92 : 17,715 = 7,531.84 : x
  2. Step 2: Convert to fraction form
    12,836.92/17,715 = 7,531.84/x
  3. Step 3: Cross multiply
    12,836.92x = 17,715 × 7,531.84
  4. Step 4: Simplify right side
    12,836.92x = 133,426,545.60
  5. Step 5: Solve for x
    x = 133,426,545.60/12,836.92
  6. Step 6: Final answer
    x = 10,393.97

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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.