Home / 20,859.88-31,290.22-6,819.96

Finding the Fourth Proportional to 20,859.88, 31,290.22 and 6,819.96

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Solution

The fourth proportional to 20,859.88, 31,290.22 and 6,819.96 is: 10,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.88 : 31,290.22 = 6,819.96 : x
  2. Step 2: Convert to fraction form
    20,859.88/31,290.22 = 6,819.96/x
  3. Step 3: Cross multiply
    20,859.88x = 31,290.22 × 6,819.96
  4. Step 4: Simplify right side
    20,859.88x = 213,398,048.79
  5. Step 5: Solve for x
    x = 213,398,048.79/20,859.88
  6. Step 6: Final answer
    x = 10,230.07

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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.