Home / 10,081.28-15,121.92-4,887.92

Finding the Fourth Proportional to 10,081.28, 15,121.92 and 4,887.92

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Solution

The fourth proportional to 10,081.28, 15,121.92 and 4,887.92 is: 7,331.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.28 : 15,121.92 = 4,887.92 : x
  2. Step 2: Convert to fraction form
    10,081.28/15,121.92 = 4,887.92/x
  3. Step 3: Cross multiply
    10,081.28x = 15,121.92 × 4,887.92
  4. Step 4: Simplify right side
    10,081.28x = 73,914,735.21
  5. Step 5: Solve for x
    x = 73,914,735.21/10,081.28
  6. Step 6: Final answer
    x = 7,331.88

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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.