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Finding the Fourth Proportional to 10,079.20, 15,121.20 and 4,232.80

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Solution

The fourth proportional to 10,079.20, 15,121.20 and 4,232.80 is: 6,350.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.20 : 15,121.20 = 4,232.80 : x
  2. Step 2: Convert to fraction form
    10,079.20/15,121.20 = 4,232.80/x
  3. Step 3: Cross multiply
    10,079.20x = 15,121.20 × 4,232.80
  4. Step 4: Simplify right side
    10,079.20x = 64,005,015.36
  5. Step 5: Solve for x
    x = 64,005,015.36/10,079.20
  6. Step 6: Final answer
    x = 6,350.21

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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.