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Finding the Fourth Proportional to 20,175.70, 30,268.42 and 6,324.70

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Solution

The fourth proportional to 20,175.70, 30,268.42 and 6,324.70 is: 9,488.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.70 : 30,268.42 = 6,324.70 : x
  2. Step 2: Convert to fraction form
    20,175.70/30,268.42 = 6,324.70/x
  3. Step 3: Cross multiply
    20,175.70x = 30,268.42 × 6,324.70
  4. Step 4: Simplify right side
    20,175.70x = 191,438,675.97
  5. Step 5: Solve for x
    x = 191,438,675.97/20,175.70
  6. Step 6: Final answer
    x = 9,488.58

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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.