Home / 20,822.75-31,217.72-7,667.94

Finding the Fourth Proportional to 20,822.75, 31,217.72 and 7,667.94

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Solution

The fourth proportional to 20,822.75, 31,217.72 and 7,667.94 is: 11,495.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.75 : 31,217.72 = 7,667.94 : x
  2. Step 2: Convert to fraction form
    20,822.75/31,217.72 = 7,667.94/x
  3. Step 3: Cross multiply
    20,822.75x = 31,217.72 × 7,667.94
  4. Step 4: Simplify right side
    20,822.75x = 239,375,565.56
  5. Step 5: Solve for x
    x = 239,375,565.56/20,822.75
  6. Step 6: Final answer
    x = 11,495.87

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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.