Home / 20,696.22-31,033.62-10,161.54

Finding the Fourth Proportional to 20,696.22, 31,033.62 and 10,161.54

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Solution

The fourth proportional to 20,696.22, 31,033.62 and 10,161.54 is: 15,237.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.22 : 31,033.62 = 10,161.54 : x
  2. Step 2: Convert to fraction form
    20,696.22/31,033.62 = 10,161.54/x
  3. Step 3: Cross multiply
    20,696.22x = 31,033.62 × 10,161.54
  4. Step 4: Simplify right side
    20,696.22x = 315,349,370.97
  5. Step 5: Solve for x
    x = 315,349,370.97/20,696.22
  6. Step 6: Final answer
    x = 15,237.05

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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.