Home / 20,419,914.86-30,629,761.32-11,778,413.66

Finding the Fourth Proportional to 20,419,914.86, 30,629,761.32 and 11,778,413.66

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Solution

The fourth proportional to 20,419,914.86, 30,629,761.32 and 11,778,413.66 is: 17,667,556.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419,914.86 : 30,629,761.32 = 11,778,413.66 : x
  2. Step 2: Convert to fraction form
    20,419,914.86/30,629,761.32 = 11,778,413.66/x
  3. Step 3: Cross multiply
    20,419,914.86x = 30,629,761.32 × 11,778,413.66
  4. Step 4: Simplify right side
    20,419,914.86x = 360,769,999,075,135.56
  5. Step 5: Solve for x
    x = 360,769,999,075,135.56/20,419,914.86
  6. Step 6: Final answer
    x = 17,667,556.48

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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.