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Finding the Fourth Proportional to 12,626.78, 18,927.03 and 7,071.98

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Solution

The fourth proportional to 12,626.78, 18,927.03 and 7,071.98 is: 10,600.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,626.78 : 18,927.03 = 7,071.98 : x
  2. Step 2: Convert to fraction form
    12,626.78/18,927.03 = 7,071.98/x
  3. Step 3: Cross multiply
    12,626.78x = 18,927.03 × 7,071.98
  4. Step 4: Simplify right side
    12,626.78x = 133,851,577.62
  5. Step 5: Solve for x
    x = 133,851,577.62/12,626.78
  6. Step 6: Final answer
    x = 10,600.61

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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.