Home / 20,664.14-30,995.92-5,081.90

Finding the Fourth Proportional to 20,664.14, 30,995.92 and 5,081.90

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Solution

The fourth proportional to 20,664.14, 30,995.92 and 5,081.90 is: 7,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.14 : 30,995.92 = 5,081.90 : x
  2. Step 2: Convert to fraction form
    20,664.14/30,995.92 = 5,081.90/x
  3. Step 3: Cross multiply
    20,664.14x = 30,995.92 × 5,081.90
  4. Step 4: Simplify right side
    20,664.14x = 157,518,165.85
  5. Step 5: Solve for x
    x = 157,518,165.85/20,664.14
  6. Step 6: Final answer
    x = 7,622.78

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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.