Home / 20,682.95-28,542.38-11,251.71

Finding the Fourth Proportional to 20,682.95, 28,542.38 and 11,251.71

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Solution

The fourth proportional to 20,682.95, 28,542.38 and 11,251.71 is: 15,527.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.95 : 28,542.38 = 11,251.71 : x
  2. Step 2: Convert to fraction form
    20,682.95/28,542.38 = 11,251.71/x
  3. Step 3: Cross multiply
    20,682.95x = 28,542.38 × 11,251.71
  4. Step 4: Simplify right side
    20,682.95x = 321,150,526.21
  5. Step 5: Solve for x
    x = 321,150,526.21/20,682.95
  6. Step 6: Final answer
    x = 15,527.31

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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.