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Finding the Fourth Proportional to 18,413.80, 27,620.70 and 16,109.80

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Solution

The fourth proportional to 18,413.80, 27,620.70 and 16,109.80 is: 24,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.80 : 27,620.70 = 16,109.80 : x
  2. Step 2: Convert to fraction form
    18,413.80/27,620.70 = 16,109.80/x
  3. Step 3: Cross multiply
    18,413.80x = 27,620.70 × 16,109.80
  4. Step 4: Simplify right side
    18,413.80x = 444,963,952.86
  5. Step 5: Solve for x
    x = 444,963,952.86/18,413.80
  6. Step 6: Final answer
    x = 24,164.70

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