Home / 20,845.50-28,766.79-11,414.27

Finding the Fourth Proportional to 20,845.50, 28,766.79 and 11,414.27

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Solution

The fourth proportional to 20,845.50, 28,766.79 and 11,414.27 is: 15,751.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.50 : 28,766.79 = 11,414.27 : x
  2. Step 2: Convert to fraction form
    20,845.50/28,766.79 = 11,414.27/x
  3. Step 3: Cross multiply
    20,845.50x = 28,766.79 × 11,414.27
  4. Step 4: Simplify right side
    20,845.50x = 328,351,764.26
  5. Step 5: Solve for x
    x = 328,351,764.26/20,845.50
  6. Step 6: Final answer
    x = 15,751.69

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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.