Home / 13,413.27-18,516.98-8,380.29

Finding the Fourth Proportional to 13,413.27, 18,516.98 and 8,380.29

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Solution

The fourth proportional to 13,413.27, 18,516.98 and 8,380.29 is: 11,568.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.27 : 18,516.98 = 8,380.29 : x
  2. Step 2: Convert to fraction form
    13,413.27/18,516.98 = 8,380.29/x
  3. Step 3: Cross multiply
    13,413.27x = 18,516.98 × 8,380.29
  4. Step 4: Simplify right side
    13,413.27x = 155,177,527.84
  5. Step 5: Solve for x
    x = 155,177,527.84/13,413.27
  6. Step 6: Final answer
    x = 11,568.96

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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.