Home / 20,620.26-30,930.38-11,849.58

Finding the Fourth Proportional to 20,620.26, 30,930.38 and 11,849.58

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Solution

The fourth proportional to 20,620.26, 30,930.38 and 11,849.58 is: 17,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.26 : 30,930.38 = 11,849.58 : x
  2. Step 2: Convert to fraction form
    20,620.26/30,930.38 = 11,849.58/x
  3. Step 3: Cross multiply
    20,620.26x = 30,930.38 × 11,849.58
  4. Step 4: Simplify right side
    20,620.26x = 366,511,952.99
  5. Step 5: Solve for x
    x = 366,511,952.99/20,620.26
  6. Step 6: Final answer
    x = 17,774.36

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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.