Home / 20,238.19-30,338.79-7,083.39

Finding the Fourth Proportional to 20,238.19, 30,338.79 and 7,083.39

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Solution

The fourth proportional to 20,238.19, 30,338.79 and 7,083.39 is: 10,618.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.19 : 30,338.79 = 7,083.39 : x
  2. Step 2: Convert to fraction form
    20,238.19/30,338.79 = 7,083.39/x
  3. Step 3: Cross multiply
    20,238.19x = 30,338.79 × 7,083.39
  4. Step 4: Simplify right side
    20,238.19x = 214,901,481.70
  5. Step 5: Solve for x
    x = 214,901,481.70/20,238.19
  6. Step 6: Final answer
    x = 10,618.61

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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.