Home / 20,825.76-31,241.24-6,787.21

Finding the Fourth Proportional to 20,825.76, 31,241.24 and 6,787.21

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Solution

The fourth proportional to 20,825.76, 31,241.24 and 6,787.21 is: 10,181.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.76 : 31,241.24 = 6,787.21 : x
  2. Step 2: Convert to fraction form
    20,825.76/31,241.24 = 6,787.21/x
  3. Step 3: Cross multiply
    20,825.76x = 31,241.24 × 6,787.21
  4. Step 4: Simplify right side
    20,825.76x = 212,040,856.54
  5. Step 5: Solve for x
    x = 212,040,856.54/20,825.76
  6. Step 6: Final answer
    x = 10,181.66

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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.