Home / 13,321.20-18,383.45-7,352.85

Finding the Fourth Proportional to 13,321.20, 18,383.45 and 7,352.85

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Solution

The fourth proportional to 13,321.20, 18,383.45 and 7,352.85 is: 10,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.20 : 18,383.45 = 7,352.85 : x
  2. Step 2: Convert to fraction form
    13,321.20/18,383.45 = 7,352.85/x
  3. Step 3: Cross multiply
    13,321.20x = 18,383.45 × 7,352.85
  4. Step 4: Simplify right side
    13,321.20x = 135,170,713.57
  5. Step 5: Solve for x
    x = 135,170,713.57/13,321.20
  6. Step 6: Final answer
    x = 10,147.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.