Home / 20,671.38-31,003.76-5,675

Finding the Fourth Proportional to 20,671.38, 31,003.76 and 5,675

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Solution

The fourth proportional to 20,671.38, 31,003.76 and 5,675 is: 8,511.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.38 : 31,003.76 = 5,675 : x
  2. Step 2: Convert to fraction form
    20,671.38/31,003.76 = 5,675/x
  3. Step 3: Cross multiply
    20,671.38x = 31,003.76 × 5,675
  4. Step 4: Simplify right side
    20,671.38x = 175,946,338
  5. Step 5: Solve for x
    x = 175,946,338/20,671.38
  6. Step 6: Final answer
    x = 8,511.59

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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.