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Finding the Fourth Proportional to 20,163.72, 27,826.02 and 11,212.04

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Solution

The fourth proportional to 20,163.72, 27,826.02 and 11,212.04 is: 15,472.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.72 : 27,826.02 = 11,212.04 : x
  2. Step 2: Convert to fraction form
    20,163.72/27,826.02 = 11,212.04/x
  3. Step 3: Cross multiply
    20,163.72x = 27,826.02 × 11,212.04
  4. Step 4: Simplify right side
    20,163.72x = 311,986,449.28
  5. Step 5: Solve for x
    x = 311,986,449.28/20,163.72
  6. Step 6: Final answer
    x = 15,472.66

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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.