Home / 11,938.56-17,908.20-3,174.36

Finding the Fourth Proportional to 11,938.56, 17,908.20 and 3,174.36

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Solution

The fourth proportional to 11,938.56, 17,908.20 and 3,174.36 is: 4,761.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.56 : 17,908.20 = 3,174.36 : x
  2. Step 2: Convert to fraction form
    11,938.56/17,908.20 = 3,174.36/x
  3. Step 3: Cross multiply
    11,938.56x = 17,908.20 × 3,174.36
  4. Step 4: Simplify right side
    11,938.56x = 56,847,073.75
  5. Step 5: Solve for x
    x = 56,847,073.75/11,938.56
  6. Step 6: Final answer
    x = 4,761.64

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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.