Home / 20,371.22-30,550.44-7,890.38

Finding the Fourth Proportional to 20,371.22, 30,550.44 and 7,890.38

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Solution

The fourth proportional to 20,371.22, 30,550.44 and 7,890.38 is: 11,833.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.22 : 30,550.44 = 7,890.38 : x
  2. Step 2: Convert to fraction form
    20,371.22/30,550.44 = 7,890.38/x
  3. Step 3: Cross multiply
    20,371.22x = 30,550.44 × 7,890.38
  4. Step 4: Simplify right side
    20,371.22x = 241,054,580.77
  5. Step 5: Solve for x
    x = 241,054,580.77/20,371.22
  6. Step 6: Final answer
    x = 11,833.09

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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.