Home / 11,418.78-17,127.84-5,174.28

Finding the Fourth Proportional to 11,418.78, 17,127.84 and 5,174.28

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Solution

The fourth proportional to 11,418.78, 17,127.84 and 5,174.28 is: 7,761.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,418.78 : 17,127.84 = 5,174.28 : x
  2. Step 2: Convert to fraction form
    11,418.78/17,127.84 = 5,174.28/x
  3. Step 3: Cross multiply
    11,418.78x = 17,127.84 × 5,174.28
  4. Step 4: Simplify right side
    11,418.78x = 88,624,239.96
  5. Step 5: Solve for x
    x = 88,624,239.96/11,418.78
  6. Step 6: Final answer
    x = 7,761.27

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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.