Home / 20,799.75-31,197.33-5,217.39

Finding the Fourth Proportional to 20,799.75, 31,197.33 and 5,217.39

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Solution

The fourth proportional to 20,799.75, 31,197.33 and 5,217.39 is: 7,825.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.75 : 31,197.33 = 5,217.39 : x
  2. Step 2: Convert to fraction form
    20,799.75/31,197.33 = 5,217.39/x
  3. Step 3: Cross multiply
    20,799.75x = 31,197.33 × 5,217.39
  4. Step 4: Simplify right side
    20,799.75x = 162,768,637.57
  5. Step 5: Solve for x
    x = 162,768,637.57/20,799.75
  6. Step 6: Final answer
    x = 7,825.51

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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.