Home / 12,313.82-18,471.38-3,992.73

Finding the Fourth Proportional to 12,313.82, 18,471.38 and 3,992.73

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Solution

The fourth proportional to 12,313.82, 18,471.38 and 3,992.73 is: 5,989.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.82 : 18,471.38 = 3,992.73 : x
  2. Step 2: Convert to fraction form
    12,313.82/18,471.38 = 3,992.73/x
  3. Step 3: Cross multiply
    12,313.82x = 18,471.38 × 3,992.73
  4. Step 4: Simplify right side
    12,313.82x = 73,751,213.10
  5. Step 5: Solve for x
    x = 73,751,213.10/12,313.82
  6. Step 6: Final answer
    x = 5,989.31

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.