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Finding the Fourth Proportional to 18,878.97, 28,327.98 and 13,367.73

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Solution

The fourth proportional to 18,878.97, 28,327.98 and 13,367.73 is: 20,058.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.97 : 28,327.98 = 13,367.73 : x
  2. Step 2: Convert to fraction form
    18,878.97/28,327.98 = 13,367.73/x
  3. Step 3: Cross multiply
    18,878.97x = 28,327.98 × 13,367.73
  4. Step 4: Simplify right side
    18,878.97x = 378,680,788.09
  5. Step 5: Solve for x
    x = 378,680,788.09/18,878.97
  6. Step 6: Final answer
    x = 20,058.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.