Home / 9,581.20-13,221.12-5,389.36

Finding the Fourth Proportional to 9,581.20, 13,221.12 and 5,389.36

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Solution

The fourth proportional to 9,581.20, 13,221.12 and 5,389.36 is: 7,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,581.20 : 13,221.12 = 5,389.36 : x
  2. Step 2: Convert to fraction form
    9,581.20/13,221.12 = 5,389.36/x
  3. Step 3: Cross multiply
    9,581.20x = 13,221.12 × 5,389.36
  4. Step 4: Simplify right side
    9,581.20x = 71,253,375.28
  5. Step 5: Solve for x
    x = 71,253,375.28/9,581.20
  6. Step 6: Final answer
    x = 7,436.79

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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.