Home / 12,172.08-18,257.43-3,738.57

Finding the Fourth Proportional to 12,172.08, 18,257.43 and 3,738.57

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Solution

The fourth proportional to 12,172.08, 18,257.43 and 3,738.57 is: 5,607.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.08 : 18,257.43 = 3,738.57 : x
  2. Step 2: Convert to fraction form
    12,172.08/18,257.43 = 3,738.57/x
  3. Step 3: Cross multiply
    12,172.08x = 18,257.43 × 3,738.57
  4. Step 4: Simplify right side
    12,172.08x = 68,256,680.08
  5. Step 5: Solve for x
    x = 68,256,680.08/12,172.08
  6. Step 6: Final answer
    x = 5,607.64

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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.