Home / 28,108.62-38,788.80-16,173.78

Finding the Fourth Proportional to 28,108.62, 38,788.80 and 16,173.78

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Solution

The fourth proportional to 28,108.62, 38,788.80 and 16,173.78 is: 22,319.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.62 : 38,788.80 = 16,173.78 : x
  2. Step 2: Convert to fraction form
    28,108.62/38,788.80 = 16,173.78/x
  3. Step 3: Cross multiply
    28,108.62x = 38,788.80 × 16,173.78
  4. Step 4: Simplify right side
    28,108.62x = 627,361,517.66
  5. Step 5: Solve for x
    x = 627,361,517.66/28,108.62
  6. Step 6: Final answer
    x = 22,319.19

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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.