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Finding the Fourth Proportional to 11,958.80, 17,947.48 and 8,286.76

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Solution

The fourth proportional to 11,958.80, 17,947.48 and 8,286.76 is: 12,436.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.80 : 17,947.48 = 8,286.76 : x
  2. Step 2: Convert to fraction form
    11,958.80/17,947.48 = 8,286.76/x
  3. Step 3: Cross multiply
    11,958.80x = 17,947.48 × 8,286.76
  4. Step 4: Simplify right side
    11,958.80x = 148,726,459.36
  5. Step 5: Solve for x
    x = 148,726,459.36/11,958.80
  6. Step 6: Final answer
    x = 12,436.57

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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.