Home / 12,313.30-18,471.23-3,992.98

Finding the Fourth Proportional to 12,313.30, 18,471.23 and 3,992.98

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Solution

The fourth proportional to 12,313.30, 18,471.23 and 3,992.98 is: 5,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.30 : 18,471.23 = 3,992.98 : x
  2. Step 2: Convert to fraction form
    12,313.30/18,471.23 = 3,992.98/x
  3. Step 3: Cross multiply
    12,313.30x = 18,471.23 × 3,992.98
  4. Step 4: Simplify right side
    12,313.30x = 73,755,251.97
  5. Step 5: Solve for x
    x = 73,755,251.97/12,313.30
  6. Step 6: Final answer
    x = 5,989.89

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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.