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Finding the Fourth Proportional to 18,644,992.80, 27,967,489.20 and 5,869,413.60

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Solution

The fourth proportional to 18,644,992.80, 27,967,489.20 and 5,869,413.60 is: 8,804,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644,992.80 : 27,967,489.20 = 5,869,413.60 : x
  2. Step 2: Convert to fraction form
    18,644,992.80/27,967,489.20 = 5,869,413.60/x
  3. Step 3: Cross multiply
    18,644,992.80x = 27,967,489.20 × 5,869,413.60
  4. Step 4: Simplify right side
    18,644,992.80x = 164,152,761,468,333.09
  5. Step 5: Solve for x
    x = 164,152,761,468,333.09/18,644,992.80
  6. Step 6: Final answer
    x = 8,804,120.40

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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.