Home / 20,633.24-28,474.20-11,201.80

Finding the Fourth Proportional to 20,633.24, 28,474.20 and 11,201.80

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Solution

The fourth proportional to 20,633.24, 28,474.20 and 11,201.80 is: 15,458.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.24 : 28,474.20 = 11,201.80 : x
  2. Step 2: Convert to fraction form
    20,633.24/28,474.20 = 11,201.80/x
  3. Step 3: Cross multiply
    20,633.24x = 28,474.20 × 11,201.80
  4. Step 4: Simplify right side
    20,633.24x = 318,962,293.56
  5. Step 5: Solve for x
    x = 318,962,293.56/20,633.24
  6. Step 6: Final answer
    x = 15,458.66

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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.