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Finding the Fourth Proportional to 12,338.73, 17,016.48 and 8,989.38

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Solution

The fourth proportional to 12,338.73, 17,016.48 and 8,989.38 is: 12,397.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.73 : 17,016.48 = 8,989.38 : x
  2. Step 2: Convert to fraction form
    12,338.73/17,016.48 = 8,989.38/x
  3. Step 3: Cross multiply
    12,338.73x = 17,016.48 × 8,989.38
  4. Step 4: Simplify right side
    12,338.73x = 152,967,604.98
  5. Step 5: Solve for x
    x = 152,967,604.98/12,338.73
  6. Step 6: Final answer
    x = 12,397.35

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1.5x scale

Why These Related Problems?

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