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Finding the Fourth Proportional to 20,067.67, 30,103.49 and 6,918.31

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Solution

The fourth proportional to 20,067.67, 30,103.49 and 6,918.31 is: 10,378.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,067.67 : 30,103.49 = 6,918.31 : x
  2. Step 2: Convert to fraction form
    20,067.67/30,103.49 = 6,918.31/x
  3. Step 3: Cross multiply
    20,067.67x = 30,103.49 × 6,918.31
  4. Step 4: Simplify right side
    20,067.67x = 208,265,241.31
  5. Step 5: Solve for x
    x = 208,265,241.31/20,067.67
  6. Step 6: Final answer
    x = 10,378.15

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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.