Home / 13,413.08-20,119.62-5,515.56

Finding the Fourth Proportional to 13,413.08, 20,119.62 and 5,515.56

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Solution

The fourth proportional to 13,413.08, 20,119.62 and 5,515.56 is: 8,273.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.08 : 20,119.62 = 5,515.56 : x
  2. Step 2: Convert to fraction form
    13,413.08/20,119.62 = 5,515.56/x
  3. Step 3: Cross multiply
    13,413.08x = 20,119.62 × 5,515.56
  4. Step 4: Simplify right side
    13,413.08x = 110,970,971.29
  5. Step 5: Solve for x
    x = 110,970,971.29/13,413.08
  6. Step 6: Final answer
    x = 8,273.34

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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.