Home / 13,608.90-20,413.56-4,249.14

Finding the Fourth Proportional to 13,608.90, 20,413.56 and 4,249.14

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Solution

The fourth proportional to 13,608.90, 20,413.56 and 4,249.14 is: 6,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.90 : 20,413.56 = 4,249.14 : x
  2. Step 2: Convert to fraction form
    13,608.90/20,413.56 = 4,249.14/x
  3. Step 3: Cross multiply
    13,608.90x = 20,413.56 × 4,249.14
  4. Step 4: Simplify right side
    13,608.90x = 86,740,074.34
  5. Step 5: Solve for x
    x = 86,740,074.34/13,608.90
  6. Step 6: Final answer
    x = 6,373.78

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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.