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Finding the Fourth Proportional to 14,891.20, 20,550.03 and 8,517.69

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Solution

The fourth proportional to 14,891.20, 20,550.03 and 8,517.69 is: 11,754.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,891.20 : 20,550.03 = 8,517.69 : x
  2. Step 2: Convert to fraction form
    14,891.20/20,550.03 = 8,517.69/x
  3. Step 3: Cross multiply
    14,891.20x = 20,550.03 × 8,517.69
  4. Step 4: Simplify right side
    14,891.20x = 175,038,785.03
  5. Step 5: Solve for x
    x = 175,038,785.03/14,891.20
  6. Step 6: Final answer
    x = 11,754.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.