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Finding the Fourth Proportional to 15,361, 21,198.18 and 8,738.28

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Solution

The fourth proportional to 15,361, 21,198.18 and 8,738.28 is: 12,058.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361 : 21,198.18 = 8,738.28 : x
  2. Step 2: Convert to fraction form
    15,361/21,198.18 = 8,738.28/x
  3. Step 3: Cross multiply
    15,361x = 21,198.18 × 8,738.28
  4. Step 4: Simplify right side
    15,361x = 185,235,632.33
  5. Step 5: Solve for x
    x = 185,235,632.33/15,361
  6. Step 6: Final answer
    x = 12,058.83

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