Home / 12,319.22-18,481.75-3,999.24

Finding the Fourth Proportional to 12,319.22, 18,481.75 and 3,999.24

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Solution

The fourth proportional to 12,319.22, 18,481.75 and 3,999.24 is: 5,999.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.22 : 18,481.75 = 3,999.24 : x
  2. Step 2: Convert to fraction form
    12,319.22/18,481.75 = 3,999.24/x
  3. Step 3: Cross multiply
    12,319.22x = 18,481.75 × 3,999.24
  4. Step 4: Simplify right side
    12,319.22x = 73,912,943.87
  5. Step 5: Solve for x
    x = 73,912,943.87/12,319.22
  6. Step 6: Final answer
    x = 5,999.81

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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.