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Finding the Fourth Proportional to 17,087.88, 25,630.68 and 8,209.57

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Solution

The fourth proportional to 17,087.88, 25,630.68 and 8,209.57 is: 12,313.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,087.88 : 25,630.68 = 8,209.57 : x
  2. Step 2: Convert to fraction form
    17,087.88/25,630.68 = 8,209.57/x
  3. Step 3: Cross multiply
    17,087.88x = 25,630.68 × 8,209.57
  4. Step 4: Simplify right side
    17,087.88x = 210,416,861.61
  5. Step 5: Solve for x
    x = 210,416,861.61/17,087.88
  6. Step 6: Final answer
    x = 12,313.81

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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.