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Finding the Fourth Proportional to 18,270.30, 27,413.90 and 9,940.39

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Solution

The fourth proportional to 18,270.30, 27,413.90 and 9,940.39 is: 14,915.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.30 : 27,413.90 = 9,940.39 : x
  2. Step 2: Convert to fraction form
    18,270.30/27,413.90 = 9,940.39/x
  3. Step 3: Cross multiply
    18,270.30x = 27,413.90 × 9,940.39
  4. Step 4: Simplify right side
    18,270.30x = 272,504,857.42
  5. Step 5: Solve for x
    x = 272,504,857.42/18,270.30
  6. Step 6: Final answer
    x = 14,915.19

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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.