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Finding the Fourth Proportional to 17,158.56, 25,729.62 and 8,383.20

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Solution

The fourth proportional to 17,158.56, 25,729.62 and 8,383.20 is: 12,570.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,158.56 : 25,729.62 = 8,383.20 : x
  2. Step 2: Convert to fraction form
    17,158.56/25,729.62 = 8,383.20/x
  3. Step 3: Cross multiply
    17,158.56x = 25,729.62 × 8,383.20
  4. Step 4: Simplify right side
    17,158.56x = 215,696,550.38
  5. Step 5: Solve for x
    x = 215,696,550.38/17,158.56
  6. Step 6: Final answer
    x = 12,570.78

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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.