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Finding the Fourth Proportional to 20,119.98, 30,169.86 and 6,968.82

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Solution

The fourth proportional to 20,119.98, 30,169.86 and 6,968.82 is: 10,449.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.98 : 30,169.86 = 6,968.82 : x
  2. Step 2: Convert to fraction form
    20,119.98/30,169.86 = 6,968.82/x
  3. Step 3: Cross multiply
    20,119.98x = 30,169.86 × 6,968.82
  4. Step 4: Simplify right side
    20,119.98x = 210,248,323.77
  5. Step 5: Solve for x
    x = 210,248,323.77/20,119.98
  6. Step 6: Final answer
    x = 10,449.73

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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.