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Finding the Fourth Proportional to 28,793.78, 39,734.34 and 16,216.10

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Solution

The fourth proportional to 28,793.78, 39,734.34 and 16,216.10 is: 22,377.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.78 : 39,734.34 = 16,216.10 : x
  2. Step 2: Convert to fraction form
    28,793.78/39,734.34 = 16,216.10/x
  3. Step 3: Cross multiply
    28,793.78x = 39,734.34 × 16,216.10
  4. Step 4: Simplify right side
    28,793.78x = 644,335,832.20
  5. Step 5: Solve for x
    x = 644,335,832.20/28,793.78
  6. Step 6: Final answer
    x = 22,377.61

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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.