Home / 20,843.93-28,766.27-11,889.38

Finding the Fourth Proportional to 20,843.93, 28,766.27 and 11,889.38

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Solution

The fourth proportional to 20,843.93, 28,766.27 and 11,889.38 is: 16,408.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.93 : 28,766.27 = 11,889.38 : x
  2. Step 2: Convert to fraction form
    20,843.93/28,766.27 = 11,889.38/x
  3. Step 3: Cross multiply
    20,843.93x = 28,766.27 × 11,889.38
  4. Step 4: Simplify right side
    20,843.93x = 342,013,216.85
  5. Step 5: Solve for x
    x = 342,013,216.85/20,843.93
  6. Step 6: Final answer
    x = 16,408.29

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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.