Home / 20,238.27-27,921.43-12,684.92

Finding the Fourth Proportional to 20,238.27, 27,921.43 and 12,684.92

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Solution

The fourth proportional to 20,238.27, 27,921.43 and 12,684.92 is: 17,500.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.27 : 27,921.43 = 12,684.92 : x
  2. Step 2: Convert to fraction form
    20,238.27/27,921.43 = 12,684.92/x
  3. Step 3: Cross multiply
    20,238.27x = 27,921.43 × 12,684.92
  4. Step 4: Simplify right side
    20,238.27x = 354,181,174.82
  5. Step 5: Solve for x
    x = 354,181,174.82/20,238.27
  6. Step 6: Final answer
    x = 17,500.56

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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.