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Finding the Fourth Proportional to 12,205.42, 16,843.44 and 6,616.42

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Solution

The fourth proportional to 12,205.42, 16,843.44 and 6,616.42 is: 9,130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205.42 : 16,843.44 = 6,616.42 : x
  2. Step 2: Convert to fraction form
    12,205.42/16,843.44 = 6,616.42/x
  3. Step 3: Cross multiply
    12,205.42x = 16,843.44 × 6,616.42
  4. Step 4: Simplify right side
    12,205.42x = 111,443,273.28
  5. Step 5: Solve for x
    x = 111,443,273.28/12,205.42
  6. Step 6: Final answer
    x = 9,130.64

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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.