Home / 20,214.78-30,336.12-7,067.22

Finding the Fourth Proportional to 20,214.78, 30,336.12 and 7,067.22

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Solution

The fourth proportional to 20,214.78, 30,336.12 and 7,067.22 is: 10,605.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.78 : 30,336.12 = 7,067.22 : x
  2. Step 2: Convert to fraction form
    20,214.78/30,336.12 = 7,067.22/x
  3. Step 3: Cross multiply
    20,214.78x = 30,336.12 × 7,067.22
  4. Step 4: Simplify right side
    20,214.78x = 214,392,033.99
  5. Step 5: Solve for x
    x = 214,392,033.99/20,214.78
  6. Step 6: Final answer
    x = 10,605.71

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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.