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Finding the Fourth Proportional to 18,626.17, 27,951.81 and 6,939.39

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Solution

The fourth proportional to 18,626.17, 27,951.81 and 6,939.39 is: 10,413.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.17 : 27,951.81 = 6,939.39 : x
  2. Step 2: Convert to fraction form
    18,626.17/27,951.81 = 6,939.39/x
  3. Step 3: Cross multiply
    18,626.17x = 27,951.81 × 6,939.39
  4. Step 4: Simplify right side
    18,626.17x = 193,968,510.80
  5. Step 5: Solve for x
    x = 193,968,510.80/18,626.17
  6. Step 6: Final answer
    x = 10,413.76

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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.