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Finding the Fourth Proportional to 11,591.50, 15,996.11 and 6,286.21

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Solution

The fourth proportional to 11,591.50, 15,996.11 and 6,286.21 is: 8,674.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,591.50 : 15,996.11 = 6,286.21 : x
  2. Step 2: Convert to fraction form
    11,591.50/15,996.11 = 6,286.21/x
  3. Step 3: Cross multiply
    11,591.50x = 15,996.11 × 6,286.21
  4. Step 4: Simplify right side
    11,591.50x = 100,554,795.23
  5. Step 5: Solve for x
    x = 100,554,795.23/11,591.50
  6. Step 6: Final answer
    x = 8,674.88

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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.