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Finding the Fourth Proportional to 18,286.55, 27,411.60 and 8,408.60

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Solution

The fourth proportional to 18,286.55, 27,411.60 and 8,408.60 is: 12,604.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.55 : 27,411.60 = 8,408.60 : x
  2. Step 2: Convert to fraction form
    18,286.55/27,411.60 = 8,408.60/x
  3. Step 3: Cross multiply
    18,286.55x = 27,411.60 × 8,408.60
  4. Step 4: Simplify right side
    18,286.55x = 230,493,179.76
  5. Step 5: Solve for x
    x = 230,493,179.76/18,286.55
  6. Step 6: Final answer
    x = 12,604.52

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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.