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Finding the Fourth Proportional to 15,418.53, 21,277.62 and 8,344.98

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Solution

The fourth proportional to 15,418.53, 21,277.62 and 8,344.98 is: 11,516.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.53 : 21,277.62 = 8,344.98 : x
  2. Step 2: Convert to fraction form
    15,418.53/21,277.62 = 8,344.98/x
  3. Step 3: Cross multiply
    15,418.53x = 21,277.62 × 8,344.98
  4. Step 4: Simplify right side
    15,418.53x = 177,561,313.35
  5. Step 5: Solve for x
    x = 177,561,313.35/15,418.53
  6. Step 6: Final answer
    x = 11,516.10

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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.