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Finding the Fourth Proportional to 12,144.73, 16,759.79 and 6,839.64

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Solution

The fourth proportional to 12,144.73, 16,759.79 and 6,839.64 is: 9,438.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.73 : 16,759.79 = 6,839.64 : x
  2. Step 2: Convert to fraction form
    12,144.73/16,759.79 = 6,839.64/x
  3. Step 3: Cross multiply
    12,144.73x = 16,759.79 × 6,839.64
  4. Step 4: Simplify right side
    12,144.73x = 114,630,930.08
  5. Step 5: Solve for x
    x = 114,630,930.08/12,144.73
  6. Step 6: Final answer
    x = 9,438.74

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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.