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Finding the Fourth Proportional to 18,630.10, 25,696.52 and 12,651.38

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Solution

The fourth proportional to 18,630.10, 25,696.52 and 12,651.38 is: 17,450.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.10 : 25,696.52 = 12,651.38 : x
  2. Step 2: Convert to fraction form
    18,630.10/25,696.52 = 12,651.38/x
  3. Step 3: Cross multiply
    18,630.10x = 25,696.52 × 12,651.38
  4. Step 4: Simplify right side
    18,630.10x = 325,096,375.94
  5. Step 5: Solve for x
    x = 325,096,375.94/18,630.10
  6. Step 6: Final answer
    x = 17,450.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.