Home / 20,917.85-31,361.58-6,873.26

Finding the Fourth Proportional to 20,917.85, 31,361.58 and 6,873.26

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Solution

The fourth proportional to 20,917.85, 31,361.58 and 6,873.26 is: 10,304.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.85 : 31,361.58 = 6,873.26 : x
  2. Step 2: Convert to fraction form
    20,917.85/31,361.58 = 6,873.26/x
  3. Step 3: Cross multiply
    20,917.85x = 31,361.58 × 6,873.26
  4. Step 4: Simplify right side
    20,917.85x = 215,556,136.54
  5. Step 5: Solve for x
    x = 215,556,136.54/20,917.85
  6. Step 6: Final answer
    x = 10,304.89

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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.