Home / 14,778.62-20,387.97-9,996.86

Finding the Fourth Proportional to 14,778.62, 20,387.97 and 9,996.86

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Solution

The fourth proportional to 14,778.62, 20,387.97 and 9,996.86 is: 13,791.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.62 : 20,387.97 = 9,996.86 : x
  2. Step 2: Convert to fraction form
    14,778.62/20,387.97 = 9,996.86/x
  3. Step 3: Cross multiply
    14,778.62x = 20,387.97 × 9,996.86
  4. Step 4: Simplify right side
    14,778.62x = 203,815,579.83
  5. Step 5: Solve for x
    x = 203,815,579.83/14,778.62
  6. Step 6: Final answer
    x = 13,791.25

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1.5x scale

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.