Home / 20,078.82-30,120.99-6,932.22

Finding the Fourth Proportional to 20,078.82, 30,120.99 and 6,932.22

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Solution

The fourth proportional to 20,078.82, 30,120.99 and 6,932.22 is: 10,399.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.82 : 30,120.99 = 6,932.22 : x
  2. Step 2: Convert to fraction form
    20,078.82/30,120.99 = 6,932.22/x
  3. Step 3: Cross multiply
    20,078.82x = 30,120.99 × 6,932.22
  4. Step 4: Simplify right side
    20,078.82x = 208,805,329.30
  5. Step 5: Solve for x
    x = 208,805,329.30/20,078.82
  6. Step 6: Final answer
    x = 10,399.28

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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.