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Finding the Fourth Proportional to 36,979.60, 55,431.60 and 18,230.80

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Solution

The fourth proportional to 36,979.60, 55,431.60 and 18,230.80 is: 27,327.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,979.60 : 55,431.60 = 18,230.80 : x
  2. Step 2: Convert to fraction form
    36,979.60/55,431.60 = 18,230.80/x
  3. Step 3: Cross multiply
    36,979.60x = 55,431.60 × 18,230.80
  4. Step 4: Simplify right side
    36,979.60x = 1,010,562,413.28
  5. Step 5: Solve for x
    x = 1,010,562,413.28/36,979.60
  6. Step 6: Final answer
    x = 27,327.56

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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.