Home / 20,724.66-31,091.41-6,685.48

Finding the Fourth Proportional to 20,724.66, 31,091.41 and 6,685.48

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Solution

The fourth proportional to 20,724.66, 31,091.41 and 6,685.48 is: 10,029.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.66 : 31,091.41 = 6,685.48 : x
  2. Step 2: Convert to fraction form
    20,724.66/31,091.41 = 6,685.48/x
  3. Step 3: Cross multiply
    20,724.66x = 31,091.41 × 6,685.48
  4. Step 4: Simplify right side
    20,724.66x = 207,860,999.73
  5. Step 5: Solve for x
    x = 207,860,999.73/20,724.66
  6. Step 6: Final answer
    x = 10,029.65

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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.