Home / 27,879.23-38,455.83-16,540.70

Finding the Fourth Proportional to 27,879.23, 38,455.83 and 16,540.70

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Solution

The fourth proportional to 27,879.23, 38,455.83 and 16,540.70 is: 22,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.23 : 38,455.83 = 16,540.70 : x
  2. Step 2: Convert to fraction form
    27,879.23/38,455.83 = 16,540.70/x
  3. Step 3: Cross multiply
    27,879.23x = 38,455.83 × 16,540.70
  4. Step 4: Simplify right side
    27,879.23x = 636,086,155.00
  5. Step 5: Solve for x
    x = 636,086,155.00/27,879.23
  6. Step 6: Final answer
    x = 22,815.78

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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.