Home / 20,086.98-30,140.72-8,249.84

Finding the Fourth Proportional to 20,086.98, 30,140.72 and 8,249.84

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Solution

The fourth proportional to 20,086.98, 30,140.72 and 8,249.84 is: 12,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.98 : 30,140.72 = 8,249.84 : x
  2. Step 2: Convert to fraction form
    20,086.98/30,140.72 = 8,249.84/x
  3. Step 3: Cross multiply
    20,086.98x = 30,140.72 × 8,249.84
  4. Step 4: Simplify right side
    20,086.98x = 248,656,213.46
  5. Step 5: Solve for x
    x = 248,656,213.46/20,086.98
  6. Step 6: Final answer
    x = 12,378.97

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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.