Home / 13,481.25-20,221.92-4,121.23

Finding the Fourth Proportional to 13,481.25, 20,221.92 and 4,121.23

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Solution

The fourth proportional to 13,481.25, 20,221.92 and 4,121.23 is: 6,181.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.25 : 20,221.92 = 4,121.23 : x
  2. Step 2: Convert to fraction form
    13,481.25/20,221.92 = 4,121.23/x
  3. Step 3: Cross multiply
    13,481.25x = 20,221.92 × 4,121.23
  4. Step 4: Simplify right side
    13,481.25x = 83,339,183.36
  5. Step 5: Solve for x
    x = 83,339,183.36/13,481.25
  6. Step 6: Final answer
    x = 6,181.86

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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.