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Finding the Fourth Proportional to 12,201.80, 16,836.19 and 7,727.03

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Solution

The fourth proportional to 12,201.80, 16,836.19 and 7,727.03 is: 10,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.80 : 16,836.19 = 7,727.03 : x
  2. Step 2: Convert to fraction form
    12,201.80/16,836.19 = 7,727.03/x
  3. Step 3: Cross multiply
    12,201.80x = 16,836.19 × 7,727.03
  4. Step 4: Simplify right side
    12,201.80x = 130,093,745.22
  5. Step 5: Solve for x
    x = 130,093,745.22/12,201.80
  6. Step 6: Final answer
    x = 10,661.85

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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.