Home / 20,787.64-31,186.92-5,997.75

Finding the Fourth Proportional to 20,787.64, 31,186.92 and 5,997.75

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Solution

The fourth proportional to 20,787.64, 31,186.92 and 5,997.75 is: 8,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.64 : 31,186.92 = 5,997.75 : x
  2. Step 2: Convert to fraction form
    20,787.64/31,186.92 = 5,997.75/x
  3. Step 3: Cross multiply
    20,787.64x = 31,186.92 × 5,997.75
  4. Step 4: Simplify right side
    20,787.64x = 187,051,254.97
  5. Step 5: Solve for x
    x = 187,051,254.97/20,787.64
  6. Step 6: Final answer
    x = 8,998.20

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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.