Home / 20,174.27-27,840.11-11,221.71

Finding the Fourth Proportional to 20,174.27, 27,840.11 and 11,221.71

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Solution

The fourth proportional to 20,174.27, 27,840.11 and 11,221.71 is: 15,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.27 : 27,840.11 = 11,221.71 : x
  2. Step 2: Convert to fraction form
    20,174.27/27,840.11 = 11,221.71/x
  3. Step 3: Cross multiply
    20,174.27x = 27,840.11 × 11,221.71
  4. Step 4: Simplify right side
    20,174.27x = 312,413,480.28
  5. Step 5: Solve for x
    x = 312,413,480.28/20,174.27
  6. Step 6: Final answer
    x = 15,485.74

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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.