Home / 20,343.35-30,519.69-7,863.48

Finding the Fourth Proportional to 20,343.35, 30,519.69 and 7,863.48

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Solution

The fourth proportional to 20,343.35, 30,519.69 and 7,863.48 is: 11,797.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.35 : 30,519.69 = 7,863.48 : x
  2. Step 2: Convert to fraction form
    20,343.35/30,519.69 = 7,863.48/x
  3. Step 3: Cross multiply
    20,343.35x = 30,519.69 × 7,863.48
  4. Step 4: Simplify right side
    20,343.35x = 239,990,942.43
  5. Step 5: Solve for x
    x = 239,990,942.43/20,343.35
  6. Step 6: Final answer
    x = 11,797.02

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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.