Home / 20,903.67-31,357.26-5,321.25

Finding the Fourth Proportional to 20,903.67, 31,357.26 and 5,321.25

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Solution

The fourth proportional to 20,903.67, 31,357.26 and 5,321.25 is: 7,982.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.67 : 31,357.26 = 5,321.25 : x
  2. Step 2: Convert to fraction form
    20,903.67/31,357.26 = 5,321.25/x
  3. Step 3: Cross multiply
    20,903.67x = 31,357.26 × 5,321.25
  4. Step 4: Simplify right side
    20,903.67x = 166,859,819.78
  5. Step 5: Solve for x
    x = 166,859,819.78/20,903.67
  6. Step 6: Final answer
    x = 7,982.32

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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.