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Finding the Fourth Proportional to 18,436.62, 27,663.06 and 9,669.42

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Solution

The fourth proportional to 18,436.62, 27,663.06 and 9,669.42 is: 14,508.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.62 : 27,663.06 = 9,669.42 : x
  2. Step 2: Convert to fraction form
    18,436.62/27,663.06 = 9,669.42/x
  3. Step 3: Cross multiply
    18,436.62x = 27,663.06 × 9,669.42
  4. Step 4: Simplify right side
    18,436.62x = 267,485,745.63
  5. Step 5: Solve for x
    x = 267,485,745.63/18,436.62
  6. Step 6: Final answer
    x = 14,508.39

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1.5x scale

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.