Home / 26,289.20-39,414.36-12,422

Finding the Fourth Proportional to 26,289.20, 39,414.36 and 12,422

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Solution

The fourth proportional to 26,289.20, 39,414.36 and 12,422 is: 18,623.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,289.20 : 39,414.36 = 12,422 : x
  2. Step 2: Convert to fraction form
    26,289.20/39,414.36 = 12,422/x
  3. Step 3: Cross multiply
    26,289.20x = 39,414.36 × 12,422
  4. Step 4: Simplify right side
    26,289.20x = 489,605,179.92
  5. Step 5: Solve for x
    x = 489,605,179.92/26,289.20
  6. Step 6: Final answer
    x = 18,623.81

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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.