Home / 13,923.72-20,879.02-8,081.96

Finding the Fourth Proportional to 13,923.72, 20,879.02 and 8,081.96

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Solution

The fourth proportional to 13,923.72, 20,879.02 and 8,081.96 is: 12,119.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.72 : 20,879.02 = 8,081.96 : x
  2. Step 2: Convert to fraction form
    13,923.72/20,879.02 = 8,081.96/x
  3. Step 3: Cross multiply
    13,923.72x = 20,879.02 × 8,081.96
  4. Step 4: Simplify right side
    13,923.72x = 168,743,404.48
  5. Step 5: Solve for x
    x = 168,743,404.48/13,923.72
  6. Step 6: Final answer
    x = 12,119.13

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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.