Home / 20,741.38-31,143.22-11,866.73

Finding the Fourth Proportional to 20,741.38, 31,143.22 and 11,866.73

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Solution

The fourth proportional to 20,741.38, 31,143.22 and 11,866.73 is: 17,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.38 : 31,143.22 = 11,866.73 : x
  2. Step 2: Convert to fraction form
    20,741.38/31,143.22 = 11,866.73/x
  3. Step 3: Cross multiply
    20,741.38x = 31,143.22 × 11,866.73
  4. Step 4: Simplify right side
    20,741.38x = 369,568,183.07
  5. Step 5: Solve for x
    x = 369,568,183.07/20,741.38
  6. Step 6: Final answer
    x = 17,817.92

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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.