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Finding the Fourth Proportional to 13,105.84, 18,086.60 and 7,517.92

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Solution

The fourth proportional to 13,105.84, 18,086.60 and 7,517.92 is: 10,375.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.84 : 18,086.60 = 7,517.92 : x
  2. Step 2: Convert to fraction form
    13,105.84/18,086.60 = 7,517.92/x
  3. Step 3: Cross multiply
    13,105.84x = 18,086.60 × 7,517.92
  4. Step 4: Simplify right side
    13,105.84x = 135,973,611.87
  5. Step 5: Solve for x
    x = 135,973,611.87/13,105.84
  6. Step 6: Final answer
    x = 10,375.04

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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.