Home / 20,682.80-28,542.76-11,251.92

Finding the Fourth Proportional to 20,682.80, 28,542.76 and 11,251.92

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Solution

The fourth proportional to 20,682.80, 28,542.76 and 11,251.92 is: 15,527.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.80 : 28,542.76 = 11,251.92 : x
  2. Step 2: Convert to fraction form
    20,682.80/28,542.76 = 11,251.92/x
  3. Step 3: Cross multiply
    20,682.80x = 28,542.76 × 11,251.92
  4. Step 4: Simplify right side
    20,682.80x = 321,160,852.10
  5. Step 5: Solve for x
    x = 321,160,852.10/20,682.80
  6. Step 6: Final answer
    x = 15,527.92

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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.