Home / 11,381.03-17,076.10-3,990.79

Finding the Fourth Proportional to 11,381.03, 17,076.10 and 3,990.79

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Solution

The fourth proportional to 11,381.03, 17,076.10 and 3,990.79 is: 5,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.03 : 17,076.10 = 3,990.79 : x
  2. Step 2: Convert to fraction form
    11,381.03/17,076.10 = 3,990.79/x
  3. Step 3: Cross multiply
    11,381.03x = 17,076.10 × 3,990.79
  4. Step 4: Simplify right side
    11,381.03x = 68,147,129.12
  5. Step 5: Solve for x
    x = 68,147,129.12/11,381.03
  6. Step 6: Final answer
    x = 5,987.78

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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.