Home / 13,331.24-18,391.02-7,739

Finding the Fourth Proportional to 13,331.24, 18,391.02 and 7,739

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Solution

The fourth proportional to 13,331.24, 18,391.02 and 7,739 is: 10,676.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.24 : 18,391.02 = 7,739 : x
  2. Step 2: Convert to fraction form
    13,331.24/18,391.02 = 7,739/x
  3. Step 3: Cross multiply
    13,331.24x = 18,391.02 × 7,739
  4. Step 4: Simplify right side
    13,331.24x = 142,328,103.78
  5. Step 5: Solve for x
    x = 142,328,103.78/13,331.24
  6. Step 6: Final answer
    x = 10,676.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.