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Finding the Fourth Proportional to 18,383.76, 27,565.56 and 8,517.60

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Solution

The fourth proportional to 18,383.76, 27,565.56 and 8,517.60 is: 12,771.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.76 : 27,565.56 = 8,517.60 : x
  2. Step 2: Convert to fraction form
    18,383.76/27,565.56 = 8,517.60/x
  3. Step 3: Cross multiply
    18,383.76x = 27,565.56 × 8,517.60
  4. Step 4: Simplify right side
    18,383.76x = 234,792,413.86
  5. Step 5: Solve for x
    x = 234,792,413.86/18,383.76
  6. Step 6: Final answer
    x = 12,771.73

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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.