Home / 10,413.50-15,621.88-3,391.86

Finding the Fourth Proportional to 10,413.50, 15,621.88 and 3,391.86

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Solution

The fourth proportional to 10,413.50, 15,621.88 and 3,391.86 is: 5,088.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,413.50 : 15,621.88 = 3,391.86 : x
  2. Step 2: Convert to fraction form
    10,413.50/15,621.88 = 3,391.86/x
  3. Step 3: Cross multiply
    10,413.50x = 15,621.88 × 3,391.86
  4. Step 4: Simplify right side
    10,413.50x = 52,987,229.90
  5. Step 5: Solve for x
    x = 52,987,229.90/10,413.50
  6. Step 6: Final answer
    x = 5,088.32

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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.