Home / 31,917.90-47,896.68-12,198.42

Finding the Fourth Proportional to 31,917.90, 47,896.68 and 12,198.42

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Solution

The fourth proportional to 31,917.90, 47,896.68 and 12,198.42 is: 18,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,917.90 : 47,896.68 = 12,198.42 : x
  2. Step 2: Convert to fraction form
    31,917.90/47,896.68 = 12,198.42/x
  3. Step 3: Cross multiply
    31,917.90x = 47,896.68 × 12,198.42
  4. Step 4: Simplify right side
    31,917.90x = 584,263,819.25
  5. Step 5: Solve for x
    x = 584,263,819.25/31,917.90
  6. Step 6: Final answer
    x = 18,305.21

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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.