Home / 10,081.22-15,121.80-2,685.69

Finding the Fourth Proportional to 10,081.22, 15,121.80 and 2,685.69

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Solution

The fourth proportional to 10,081.22, 15,121.80 and 2,685.69 is: 4,028.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.22 : 15,121.80 = 2,685.69 : x
  2. Step 2: Convert to fraction form
    10,081.22/15,121.80 = 2,685.69/x
  3. Step 3: Cross multiply
    10,081.22x = 15,121.80 × 2,685.69
  4. Step 4: Simplify right side
    10,081.22x = 40,612,467.04
  5. Step 5: Solve for x
    x = 40,612,467.04/10,081.22
  6. Step 6: Final answer
    x = 4,028.53

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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.