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Finding the Fourth Proportional to 10,169.28, 15,250.80 and 3,928.80

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Solution

The fourth proportional to 10,169.28, 15,250.80 and 3,928.80 is: 5,891.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,169.28 : 15,250.80 = 3,928.80 : x
  2. Step 2: Convert to fraction form
    10,169.28/15,250.80 = 3,928.80/x
  3. Step 3: Cross multiply
    10,169.28x = 15,250.80 × 3,928.80
  4. Step 4: Simplify right side
    10,169.28x = 59,917,343.04
  5. Step 5: Solve for x
    x = 59,917,343.04/10,169.28
  6. Step 6: Final answer
    x = 5,891.99

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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.