Home / 13,278.92-19,919.42-5,377.70

Finding the Fourth Proportional to 13,278.92, 19,919.42 and 5,377.70

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Solution

The fourth proportional to 13,278.92, 19,919.42 and 5,377.70 is: 8,066.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.92 : 19,919.42 = 5,377.70 : x
  2. Step 2: Convert to fraction form
    13,278.92/19,919.42 = 5,377.70/x
  3. Step 3: Cross multiply
    13,278.92x = 19,919.42 × 5,377.70
  4. Step 4: Simplify right side
    13,278.92x = 107,120,664.93
  5. Step 5: Solve for x
    x = 107,120,664.93/13,278.92
  6. Step 6: Final answer
    x = 8,066.97

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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.