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Finding the Fourth Proportional to 12,474.84, 18,718.10 and 5,453.94

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Solution

The fourth proportional to 12,474.84, 18,718.10 and 5,453.94 is: 8,183.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.84 : 18,718.10 = 5,453.94 : x
  2. Step 2: Convert to fraction form
    12,474.84/18,718.10 = 5,453.94/x
  3. Step 3: Cross multiply
    12,474.84x = 18,718.10 × 5,453.94
  4. Step 4: Simplify right side
    12,474.84x = 102,087,413.84
  5. Step 5: Solve for x
    x = 102,087,413.84/12,474.84
  6. Step 6: Final answer
    x = 8,183.46

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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.