Home / 20,796.96-31,195.44-5,214.54

Finding the Fourth Proportional to 20,796.96, 31,195.44 and 5,214.54

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Solution

The fourth proportional to 20,796.96, 31,195.44 and 5,214.54 is: 7,821.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.96 : 31,195.44 = 5,214.54 : x
  2. Step 2: Convert to fraction form
    20,796.96/31,195.44 = 5,214.54/x
  3. Step 3: Cross multiply
    20,796.96x = 31,195.44 × 5,214.54
  4. Step 4: Simplify right side
    20,796.96x = 162,669,869.70
  5. Step 5: Solve for x
    x = 162,669,869.70/20,796.96
  6. Step 6: Final answer
    x = 7,821.81

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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.