Home / 13,939.70-20,893.34-5,169.02

Finding the Fourth Proportional to 13,939.70, 20,893.34 and 5,169.02

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Solution

The fourth proportional to 13,939.70, 20,893.34 and 5,169.02 is: 7,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.70 : 20,893.34 = 5,169.02 : x
  2. Step 2: Convert to fraction form
    13,939.70/20,893.34 = 5,169.02/x
  3. Step 3: Cross multiply
    13,939.70x = 20,893.34 × 5,169.02
  4. Step 4: Simplify right side
    13,939.70x = 107,998,000.78
  5. Step 5: Solve for x
    x = 107,998,000.78/13,939.70
  6. Step 6: Final answer
    x = 7,747.52

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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.