Home / 12,738.32-19,105.40-3,378.92

Finding the Fourth Proportional to 12,738.32, 19,105.40 and 3,378.92

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Solution

The fourth proportional to 12,738.32, 19,105.40 and 3,378.92 is: 5,067.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.32 : 19,105.40 = 3,378.92 : x
  2. Step 2: Convert to fraction form
    12,738.32/19,105.40 = 3,378.92/x
  3. Step 3: Cross multiply
    12,738.32x = 19,105.40 × 3,378.92
  4. Step 4: Simplify right side
    12,738.32x = 64,555,618.17
  5. Step 5: Solve for x
    x = 64,555,618.17/12,738.32
  6. Step 6: Final answer
    x = 5,067.83

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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.