Home / 20,198.08-30,301.22-8,511.30

Finding the Fourth Proportional to 20,198.08, 30,301.22 and 8,511.30

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Solution

The fourth proportional to 20,198.08, 30,301.22 and 8,511.30 is: 12,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.08 : 30,301.22 = 8,511.30 : x
  2. Step 2: Convert to fraction form
    20,198.08/30,301.22 = 8,511.30/x
  3. Step 3: Cross multiply
    20,198.08x = 30,301.22 × 8,511.30
  4. Step 4: Simplify right side
    20,198.08x = 257,902,773.79
  5. Step 5: Solve for x
    x = 257,902,773.79/20,198.08
  6. Step 6: Final answer
    x = 12,768.68

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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.