Home / 20,825.92-28,739.76-11,873.44

Finding the Fourth Proportional to 20,825.92, 28,739.76 and 11,873.44

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Solution

The fourth proportional to 20,825.92, 28,739.76 and 11,873.44 is: 16,385.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.92 : 28,739.76 = 11,873.44 : x
  2. Step 2: Convert to fraction form
    20,825.92/28,739.76 = 11,873.44/x
  3. Step 3: Cross multiply
    20,825.92x = 28,739.76 × 11,873.44
  4. Step 4: Simplify right side
    20,825.92x = 341,239,815.97
  5. Step 5: Solve for x
    x = 341,239,815.97/20,825.92
  6. Step 6: Final answer
    x = 16,385.34

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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.