Home / 20,198.96-30,297.97-5,407.86

Finding the Fourth Proportional to 20,198.96, 30,297.97 and 5,407.86

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Solution

The fourth proportional to 20,198.96, 30,297.97 and 5,407.86 is: 8,111.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.96 : 30,297.97 = 5,407.86 : x
  2. Step 2: Convert to fraction form
    20,198.96/30,297.97 = 5,407.86/x
  3. Step 3: Cross multiply
    20,198.96x = 30,297.97 × 5,407.86
  4. Step 4: Simplify right side
    20,198.96x = 163,847,180.04
  5. Step 5: Solve for x
    x = 163,847,180.04/20,198.96
  6. Step 6: Final answer
    x = 8,111.66

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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.