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Finding the Fourth Proportional to 12,850.92, 19,286.67 and 12,440.87

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Solution

The fourth proportional to 12,850.92, 19,286.67 and 12,440.87 is: 18,671.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,850.92 : 19,286.67 = 12,440.87 : x
  2. Step 2: Convert to fraction form
    12,850.92/19,286.67 = 12,440.87/x
  3. Step 3: Cross multiply
    12,850.92x = 19,286.67 × 12,440.87
  4. Step 4: Simplify right side
    12,850.92x = 239,942,857.77
  5. Step 5: Solve for x
    x = 239,942,857.77/12,850.92
  6. Step 6: Final answer
    x = 18,671.26

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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.