Home / 20,249.97-30,385.20-13,662.32

Finding the Fourth Proportional to 20,249.97, 30,385.20 and 13,662.32

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Solution

The fourth proportional to 20,249.97, 30,385.20 and 13,662.32 is: 20,500.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.97 : 30,385.20 = 13,662.32 : x
  2. Step 2: Convert to fraction form
    20,249.97/30,385.20 = 13,662.32/x
  3. Step 3: Cross multiply
    20,249.97x = 30,385.20 × 13,662.32
  4. Step 4: Simplify right side
    20,249.97x = 415,132,325.66
  5. Step 5: Solve for x
    x = 415,132,325.66/20,249.97
  6. Step 6: Final answer
    x = 20,500.39

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1.5x scale

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.