Home / 11,439.20-17,158.80-11,244.80

Finding the Fourth Proportional to 11,439.20, 17,158.80 and 11,244.80

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Solution

The fourth proportional to 11,439.20, 17,158.80 and 11,244.80 is: 16,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.20 : 17,158.80 = 11,244.80 : x
  2. Step 2: Convert to fraction form
    11,439.20/17,158.80 = 11,244.80/x
  3. Step 3: Cross multiply
    11,439.20x = 17,158.80 × 11,244.80
  4. Step 4: Simplify right side
    11,439.20x = 192,947,274.24
  5. Step 5: Solve for x
    x = 192,947,274.24/11,439.20
  6. Step 6: Final answer
    x = 16,867.20

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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.