Home / 11,389.28-17,078.87-5,149.04

Finding the Fourth Proportional to 11,389.28, 17,078.87 and 5,149.04

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Solution

The fourth proportional to 11,389.28, 17,078.87 and 5,149.04 is: 7,721.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.28 : 17,078.87 = 5,149.04 : x
  2. Step 2: Convert to fraction form
    11,389.28/17,078.87 = 5,149.04/x
  3. Step 3: Cross multiply
    11,389.28x = 17,078.87 × 5,149.04
  4. Step 4: Simplify right side
    11,389.28x = 87,939,712.26
  5. Step 5: Solve for x
    x = 87,939,712.26/11,389.28
  6. Step 6: Final answer
    x = 7,721.27

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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.