Home / 20,630.22-30,976.92-18,185.64

Finding the Fourth Proportional to 20,630.22, 30,976.92 and 18,185.64

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Solution

The fourth proportional to 20,630.22, 30,976.92 and 18,185.64 is: 27,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.22 : 30,976.92 = 18,185.64 : x
  2. Step 2: Convert to fraction form
    20,630.22/30,976.92 = 18,185.64/x
  3. Step 3: Cross multiply
    20,630.22x = 30,976.92 × 18,185.64
  4. Step 4: Simplify right side
    20,630.22x = 563,335,115.43
  5. Step 5: Solve for x
    x = 563,335,115.43/20,630.22
  6. Step 6: Final answer
    x = 27,306.31

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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.