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Finding the Fourth Proportional to 18,478.41, 27,700.33 and 6,788.49

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Solution

The fourth proportional to 18,478.41, 27,700.33 and 6,788.49 is: 10,176.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.41 : 27,700.33 = 6,788.49 : x
  2. Step 2: Convert to fraction form
    18,478.41/27,700.33 = 6,788.49/x
  3. Step 3: Cross multiply
    18,478.41x = 27,700.33 × 6,788.49
  4. Step 4: Simplify right side
    18,478.41x = 188,043,413.20
  5. Step 5: Solve for x
    x = 188,043,413.20/18,478.41
  6. Step 6: Final answer
    x = 10,176.38

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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.