Home / 12,178.98-18,269.07-3,414.78

Finding the Fourth Proportional to 12,178.98, 18,269.07 and 3,414.78

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Solution

The fourth proportional to 12,178.98, 18,269.07 and 3,414.78 is: 5,122.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.98 : 18,269.07 = 3,414.78 : x
  2. Step 2: Convert to fraction form
    12,178.98/18,269.07 = 3,414.78/x
  3. Step 3: Cross multiply
    12,178.98x = 18,269.07 × 3,414.78
  4. Step 4: Simplify right side
    12,178.98x = 62,384,854.85
  5. Step 5: Solve for x
    x = 62,384,854.85/12,178.98
  6. Step 6: Final answer
    x = 5,122.34

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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.