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Finding the Fourth Proportional to 28,194.73, 38,912.87 and 16,255.73

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Solution

The fourth proportional to 28,194.73, 38,912.87 and 16,255.73 is: 22,435.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194.73 : 38,912.87 = 16,255.73 : x
  2. Step 2: Convert to fraction form
    28,194.73/38,912.87 = 16,255.73/x
  3. Step 3: Cross multiply
    28,194.73x = 38,912.87 × 16,255.73
  4. Step 4: Simplify right side
    28,194.73x = 632,557,108.25
  5. Step 5: Solve for x
    x = 632,557,108.25/28,194.73
  6. Step 6: Final answer
    x = 22,435.30

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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.