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Finding the Fourth Proportional to 20,067.67, 30,101.51 and 8,374.51

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Solution

The fourth proportional to 20,067.67, 30,101.51 and 8,374.51 is: 12,561.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,067.67 : 30,101.51 = 8,374.51 : x
  2. Step 2: Convert to fraction form
    20,067.67/30,101.51 = 8,374.51/x
  3. Step 3: Cross multiply
    20,067.67x = 30,101.51 × 8,374.51
  4. Step 4: Simplify right side
    20,067.67x = 252,085,396.51
  5. Step 5: Solve for x
    x = 252,085,396.51/20,067.67
  6. Step 6: Final answer
    x = 12,561.77

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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.