Home / 31,578.30-47,279.97-15,919.38

Finding the Fourth Proportional to 31,578.30, 47,279.97 and 15,919.38

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Solution

The fourth proportional to 31,578.30, 47,279.97 and 15,919.38 is: 23,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,578.30 : 47,279.97 = 15,919.38 : x
  2. Step 2: Convert to fraction form
    31,578.30/47,279.97 = 15,919.38/x
  3. Step 3: Cross multiply
    31,578.30x = 47,279.97 × 15,919.38
  4. Step 4: Simplify right side
    31,578.30x = 752,667,808.82
  5. Step 5: Solve for x
    x = 752,667,808.82/31,578.30
  6. Step 6: Final answer
    x = 23,834.97

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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.