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Finding the Fourth Proportional to 20,879.57, 28,794.24 and 16,644.68

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Solution

The fourth proportional to 20,879.57, 28,794.24 and 16,644.68 is: 22,954.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.57 : 28,794.24 = 16,644.68 : x
  2. Step 2: Convert to fraction form
    20,879.57/28,794.24 = 16,644.68/x
  3. Step 3: Cross multiply
    20,879.57x = 28,794.24 × 16,644.68
  4. Step 4: Simplify right side
    20,879.57x = 479,270,910.64
  5. Step 5: Solve for x
    x = 479,270,910.64/20,879.57
  6. Step 6: Final answer
    x = 22,954.06

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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.