Home / 20,799.96-31,180.26-6,939

Finding the Fourth Proportional to 20,799.96, 31,180.26 and 6,939

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Solution

The fourth proportional to 20,799.96, 31,180.26 and 6,939 is: 10,401.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.96 : 31,180.26 = 6,939 : x
  2. Step 2: Convert to fraction form
    20,799.96/31,180.26 = 6,939/x
  3. Step 3: Cross multiply
    20,799.96x = 31,180.26 × 6,939
  4. Step 4: Simplify right side
    20,799.96x = 216,359,824.14
  5. Step 5: Solve for x
    x = 216,359,824.14/20,799.96
  6. Step 6: Final answer
    x = 10,401.93

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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.