Home / 43,608.50-65,413.38-12,443.75

Finding the Fourth Proportional to 43,608.50, 65,413.38 and 12,443.75

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Solution

The fourth proportional to 43,608.50, 65,413.38 and 12,443.75 is: 18,665.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,608.50 : 65,413.38 = 12,443.75 : x
  2. Step 2: Convert to fraction form
    43,608.50/65,413.38 = 12,443.75/x
  3. Step 3: Cross multiply
    43,608.50x = 65,413.38 × 12,443.75
  4. Step 4: Simplify right side
    43,608.50x = 813,987,747.38
  5. Step 5: Solve for x
    x = 813,987,747.38/43,608.50
  6. Step 6: Final answer
    x = 18,665.80

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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.