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Finding the Fourth Proportional to 15,344.78, 21,175.23 and 8,631.02

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Solution

The fourth proportional to 15,344.78, 21,175.23 and 8,631.02 is: 11,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.78 : 21,175.23 = 8,631.02 : x
  2. Step 2: Convert to fraction form
    15,344.78/21,175.23 = 8,631.02/x
  3. Step 3: Cross multiply
    15,344.78x = 21,175.23 × 8,631.02
  4. Step 4: Simplify right side
    15,344.78x = 182,763,833.63
  5. Step 5: Solve for x
    x = 182,763,833.63/15,344.78
  6. Step 6: Final answer
    x = 11,910.49

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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.