Home / 12,039.38-16,616.64-8,067.42

Finding the Fourth Proportional to 12,039.38, 16,616.64 and 8,067.42

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Solution

The fourth proportional to 12,039.38, 16,616.64 and 8,067.42 is: 11,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.38 : 16,616.64 = 8,067.42 : x
  2. Step 2: Convert to fraction form
    12,039.38/16,616.64 = 8,067.42/x
  3. Step 3: Cross multiply
    12,039.38x = 16,616.64 × 8,067.42
  4. Step 4: Simplify right side
    12,039.38x = 134,053,413.87
  5. Step 5: Solve for x
    x = 134,053,413.87/12,039.38
  6. Step 6: Final answer
    x = 11,134.58

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Half scale
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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.