Home / 9,120.20-13,680.30-9,062.60

Finding the Fourth Proportional to 9,120.20, 13,680.30 and 9,062.60

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Solution

The fourth proportional to 9,120.20, 13,680.30 and 9,062.60 is: 13,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.20 : 13,680.30 = 9,062.60 : x
  2. Step 2: Convert to fraction form
    9,120.20/13,680.30 = 9,062.60/x
  3. Step 3: Cross multiply
    9,120.20x = 13,680.30 × 9,062.60
  4. Step 4: Simplify right side
    9,120.20x = 123,979,086.78
  5. Step 5: Solve for x
    x = 123,979,086.78/9,120.20
  6. Step 6: Final answer
    x = 13,593.90

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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.