Home / 20,481.64-30,669-14,223.04

Finding the Fourth Proportional to 20,481.64, 30,669 and 14,223.04

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Solution

The fourth proportional to 20,481.64, 30,669 and 14,223.04 is: 21,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.64 : 30,669 = 14,223.04 : x
  2. Step 2: Convert to fraction form
    20,481.64/30,669 = 14,223.04/x
  3. Step 3: Cross multiply
    20,481.64x = 30,669 × 14,223.04
  4. Step 4: Simplify right side
    20,481.64x = 436,206,413.76
  5. Step 5: Solve for x
    x = 436,206,413.76/20,481.64
  6. Step 6: Final answer
    x = 21,297.44

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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.