Home / 13,816.21-20,729.49-8,273.47

Finding the Fourth Proportional to 13,816.21, 20,729.49 and 8,273.47

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Solution

The fourth proportional to 13,816.21, 20,729.49 and 8,273.47 is: 12,413.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,816.21 : 20,729.49 = 8,273.47 : x
  2. Step 2: Convert to fraction form
    13,816.21/20,729.49 = 8,273.47/x
  3. Step 3: Cross multiply
    13,816.21x = 20,729.49 × 8,273.47
  4. Step 4: Simplify right side
    13,816.21x = 171,504,813.63
  5. Step 5: Solve for x
    x = 171,504,813.63/13,816.21
  6. Step 6: Final answer
    x = 12,413.30

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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.