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Finding the Fourth Proportional to 43,578.44, 65,368.57 and 12,413.69

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Solution

The fourth proportional to 43,578.44, 65,368.57 and 12,413.69 is: 18,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,578.44 : 65,368.57 = 12,413.69 : x
  2. Step 2: Convert to fraction form
    43,578.44/65,368.57 = 12,413.69/x
  3. Step 3: Cross multiply
    43,578.44x = 65,368.57 × 12,413.69
  4. Step 4: Simplify right side
    43,578.44x = 811,465,163.72
  5. Step 5: Solve for x
    x = 811,465,163.72/43,578.44
  6. Step 6: Final answer
    x = 18,620.79

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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.