Home / 20,261.18-30,391.77-5,470.08

Finding the Fourth Proportional to 20,261.18, 30,391.77 and 5,470.08

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Solution

The fourth proportional to 20,261.18, 30,391.77 and 5,470.08 is: 8,205.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.18 : 30,391.77 = 5,470.08 : x
  2. Step 2: Convert to fraction form
    20,261.18/30,391.77 = 5,470.08/x
  3. Step 3: Cross multiply
    20,261.18x = 30,391.77 × 5,470.08
  4. Step 4: Simplify right side
    20,261.18x = 166,245,413.24
  5. Step 5: Solve for x
    x = 166,245,413.24/20,261.18
  6. Step 6: Final answer
    x = 8,205.12

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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.