Home / 12,474.96-17,221.68-7,760.76

Finding the Fourth Proportional to 12,474.96, 17,221.68 and 7,760.76

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Solution

The fourth proportional to 12,474.96, 17,221.68 and 7,760.76 is: 10,713.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.96 : 17,221.68 = 7,760.76 : x
  2. Step 2: Convert to fraction form
    12,474.96/17,221.68 = 7,760.76/x
  3. Step 3: Cross multiply
    12,474.96x = 17,221.68 × 7,760.76
  4. Step 4: Simplify right side
    12,474.96x = 133,653,325.28
  5. Step 5: Solve for x
    x = 133,653,325.28/12,474.96
  6. Step 6: Final answer
    x = 10,713.73

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Half scale
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Double scale
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Similar ratio
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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.