Home / 12,278.88-18,414.09-3,511.44

Finding the Fourth Proportional to 12,278.88, 18,414.09 and 3,511.44

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Solution

The fourth proportional to 12,278.88, 18,414.09 and 3,511.44 is: 5,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.88 : 18,414.09 = 3,511.44 : x
  2. Step 2: Convert to fraction form
    12,278.88/18,414.09 = 3,511.44/x
  3. Step 3: Cross multiply
    12,278.88x = 18,414.09 × 3,511.44
  4. Step 4: Simplify right side
    12,278.88x = 64,659,972.19
  5. Step 5: Solve for x
    x = 64,659,972.19/12,278.88
  6. Step 6: Final answer
    x = 5,265.95

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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.