Home / 20,191.98-30,290.76-7,042.44

Finding the Fourth Proportional to 20,191.98, 30,290.76 and 7,042.44

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Solution

The fourth proportional to 20,191.98, 30,290.76 and 7,042.44 is: 10,564.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.98 : 30,290.76 = 7,042.44 : x
  2. Step 2: Convert to fraction form
    20,191.98/30,290.76 = 7,042.44/x
  3. Step 3: Cross multiply
    20,191.98x = 30,290.76 × 7,042.44
  4. Step 4: Simplify right side
    20,191.98x = 213,320,859.85
  5. Step 5: Solve for x
    x = 213,320,859.85/20,191.98
  6. Step 6: Final answer
    x = 10,564.63

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1.5x scale

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.