Home / 20,711.88-31,072.86-6,671.97

Finding the Fourth Proportional to 20,711.88, 31,072.86 and 6,671.97

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Solution

The fourth proportional to 20,711.88, 31,072.86 and 6,671.97 is: 10,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.88 : 31,072.86 = 6,671.97 : x
  2. Step 2: Convert to fraction form
    20,711.88/31,072.86 = 6,671.97/x
  3. Step 3: Cross multiply
    20,711.88x = 31,072.86 × 6,671.97
  4. Step 4: Simplify right side
    20,711.88x = 207,317,189.73
  5. Step 5: Solve for x
    x = 207,317,189.73/20,711.88
  6. Step 6: Final answer
    x = 10,009.58

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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.