Home / 11,947.92-16,474.80-8,171.70

Finding the Fourth Proportional to 11,947.92, 16,474.80 and 8,171.70

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Solution

The fourth proportional to 11,947.92, 16,474.80 and 8,171.70 is: 11,267.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.92 : 16,474.80 = 8,171.70 : x
  2. Step 2: Convert to fraction form
    11,947.92/16,474.80 = 8,171.70/x
  3. Step 3: Cross multiply
    11,947.92x = 16,474.80 × 8,171.70
  4. Step 4: Simplify right side
    11,947.92x = 134,627,123.16
  5. Step 5: Solve for x
    x = 134,627,123.16/11,947.92
  6. Step 6: Final answer
    x = 11,267.83

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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.