Home / 20,929.97-28,883.33-11,498.54

Finding the Fourth Proportional to 20,929.97, 28,883.33 and 11,498.54

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Solution

The fourth proportional to 20,929.97, 28,883.33 and 11,498.54 is: 15,867.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.97 : 28,883.33 = 11,498.54 : x
  2. Step 2: Convert to fraction form
    20,929.97/28,883.33 = 11,498.54/x
  3. Step 3: Cross multiply
    20,929.97x = 28,883.33 × 11,498.54
  4. Step 4: Simplify right side
    20,929.97x = 332,116,067.85
  5. Step 5: Solve for x
    x = 332,116,067.85/20,929.97
  6. Step 6: Final answer
    x = 15,867.97

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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.