Home / 13,413.19-20,120.16-3,552.47

Finding the Fourth Proportional to 13,413.19, 20,120.16 and 3,552.47

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Solution

The fourth proportional to 13,413.19, 20,120.16 and 3,552.47 is: 5,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.19 : 20,120.16 = 3,552.47 : x
  2. Step 2: Convert to fraction form
    13,413.19/20,120.16 = 3,552.47/x
  3. Step 3: Cross multiply
    13,413.19x = 20,120.16 × 3,552.47
  4. Step 4: Simplify right side
    13,413.19x = 71,476,315.10
  5. Step 5: Solve for x
    x = 71,476,315.10/13,413.19
  6. Step 6: Final answer
    x = 5,328.81

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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.