Home / 20,137.08-27,791.35-12,183.69

Finding the Fourth Proportional to 20,137.08, 27,791.35 and 12,183.69

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Solution

The fourth proportional to 20,137.08, 27,791.35 and 12,183.69 is: 16,814.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.08 : 27,791.35 = 12,183.69 : x
  2. Step 2: Convert to fraction form
    20,137.08/27,791.35 = 12,183.69/x
  3. Step 3: Cross multiply
    20,137.08x = 27,791.35 × 12,183.69
  4. Step 4: Simplify right side
    20,137.08x = 338,601,162.62
  5. Step 5: Solve for x
    x = 338,601,162.62/20,137.08
  6. Step 6: Final answer
    x = 16,814.81

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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.