Home / 12,251.94-18,378.36-7,519.11

Finding the Fourth Proportional to 12,251.94, 18,378.36 and 7,519.11

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Solution

The fourth proportional to 12,251.94, 18,378.36 and 7,519.11 is: 11,278.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251.94 : 18,378.36 = 7,519.11 : x
  2. Step 2: Convert to fraction form
    12,251.94/18,378.36 = 7,519.11/x
  3. Step 3: Cross multiply
    12,251.94x = 18,378.36 × 7,519.11
  4. Step 4: Simplify right side
    12,251.94x = 138,188,910.46
  5. Step 5: Solve for x
    x = 138,188,910.46/12,251.94
  6. Step 6: Final answer
    x = 11,278.94

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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.