Home / 12,319.38-18,481.50-3,997.85

Finding the Fourth Proportional to 12,319.38, 18,481.50 and 3,997.85

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Solution

The fourth proportional to 12,319.38, 18,481.50 and 3,997.85 is: 5,997.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.38 : 18,481.50 = 3,997.85 : x
  2. Step 2: Convert to fraction form
    12,319.38/18,481.50 = 3,997.85/x
  3. Step 3: Cross multiply
    12,319.38x = 18,481.50 × 3,997.85
  4. Step 4: Simplify right side
    12,319.38x = 73,886,172.37
  5. Step 5: Solve for x
    x = 73,886,172.37/12,319.38
  6. Step 6: Final answer
    x = 5,997.56

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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.