Home / 20,338.08-30,508.20-6,486

Finding the Fourth Proportional to 20,338.08, 30,508.20 and 6,486

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Solution

The fourth proportional to 20,338.08, 30,508.20 and 6,486 is: 9,729.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,338.08 : 30,508.20 = 6,486 : x
  2. Step 2: Convert to fraction form
    20,338.08/30,508.20 = 6,486/x
  3. Step 3: Cross multiply
    20,338.08x = 30,508.20 × 6,486
  4. Step 4: Simplify right side
    20,338.08x = 197,876,185.20
  5. Step 5: Solve for x
    x = 197,876,185.20/20,338.08
  6. Step 6: Final answer
    x = 9,729.34

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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.