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Finding the Fourth Proportional to 28,203.39, 38,910.39 and 16,873.22

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Solution

The fourth proportional to 28,203.39, 38,910.39 and 16,873.22 is: 23,278.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.39 : 38,910.39 = 16,873.22 : x
  2. Step 2: Convert to fraction form
    28,203.39/38,910.39 = 16,873.22/x
  3. Step 3: Cross multiply
    28,203.39x = 38,910.39 × 16,873.22
  4. Step 4: Simplify right side
    28,203.39x = 656,543,376.20
  5. Step 5: Solve for x
    x = 656,543,376.20/28,203.39
  6. Step 6: Final answer
    x = 23,278.88

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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.