Home / 20,929.25-28,882.38-11,498.42

Finding the Fourth Proportional to 20,929.25, 28,882.38 and 11,498.42

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Solution

The fourth proportional to 20,929.25, 28,882.38 and 11,498.42 is: 15,867.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.25 : 28,882.38 = 11,498.42 : x
  2. Step 2: Convert to fraction form
    20,929.25/28,882.38 = 11,498.42/x
  3. Step 3: Cross multiply
    20,929.25x = 28,882.38 × 11,498.42
  4. Step 4: Simplify right side
    20,929.25x = 332,101,692.72
  5. Step 5: Solve for x
    x = 332,101,692.72/20,929.25
  6. Step 6: Final answer
    x = 15,867.83

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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.