Home / 20,682.42-28,542.36-11,251.62

Finding the Fourth Proportional to 20,682.42, 28,542.36 and 11,251.62

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Solution

The fourth proportional to 20,682.42, 28,542.36 and 11,251.62 is: 15,527.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.42 : 28,542.36 = 11,251.62 : x
  2. Step 2: Convert to fraction form
    20,682.42/28,542.36 = 11,251.62/x
  3. Step 3: Cross multiply
    20,682.42x = 28,542.36 × 11,251.62
  4. Step 4: Simplify right side
    20,682.42x = 321,147,788.62
  5. Step 5: Solve for x
    x = 321,147,788.62/20,682.42
  6. Step 6: Final answer
    x = 15,527.57

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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.