Home / 20,843.77-28,778.33-12,348.64

Finding the Fourth Proportional to 20,843.77, 28,778.33 and 12,348.64

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Solution

The fourth proportional to 20,843.77, 28,778.33 and 12,348.64 is: 17,049.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.77 : 28,778.33 = 12,348.64 : x
  2. Step 2: Convert to fraction form
    20,843.77/28,778.33 = 12,348.64/x
  3. Step 3: Cross multiply
    20,843.77x = 28,778.33 × 12,348.64
  4. Step 4: Simplify right side
    20,843.77x = 355,373,236.97
  5. Step 5: Solve for x
    x = 355,373,236.97/20,843.77
  6. Step 6: Final answer
    x = 17,049.37

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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.