Home / 20,843.68-28,764.96-11,412.44

Finding the Fourth Proportional to 20,843.68, 28,764.96 and 11,412.44

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Solution

The fourth proportional to 20,843.68, 28,764.96 and 11,412.44 is: 15,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.68 : 28,764.96 = 11,412.44 : x
  2. Step 2: Convert to fraction form
    20,843.68/28,764.96 = 11,412.44/x
  3. Step 3: Cross multiply
    20,843.68x = 28,764.96 × 11,412.44
  4. Step 4: Simplify right side
    20,843.68x = 328,278,380.10
  5. Step 5: Solve for x
    x = 328,278,380.10/20,843.68
  6. Step 6: Final answer
    x = 15,749.54

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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.