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Finding the Fourth Proportional to 18,272.40, 27,413.92 and 7,736.96

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Solution

The fourth proportional to 18,272.40, 27,413.92 and 7,736.96 is: 11,607.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.40 : 27,413.92 = 7,736.96 : x
  2. Step 2: Convert to fraction form
    18,272.40/27,413.92 = 7,736.96/x
  3. Step 3: Cross multiply
    18,272.40x = 27,413.92 × 7,736.96
  4. Step 4: Simplify right side
    18,272.40x = 212,100,402.48
  5. Step 5: Solve for x
    x = 212,100,402.48/18,272.40
  6. Step 6: Final answer
    x = 11,607.69

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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.