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Finding the Fourth Proportional to 12,144.61, 16,759.56 and 6,839.32

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Solution

The fourth proportional to 12,144.61, 16,759.56 and 6,839.32 is: 9,438.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.61 : 16,759.56 = 6,839.32 : x
  2. Step 2: Convert to fraction form
    12,144.61/16,759.56 = 6,839.32/x
  3. Step 3: Cross multiply
    12,144.61x = 16,759.56 × 6,839.32
  4. Step 4: Simplify right side
    12,144.61x = 114,623,993.90
  5. Step 5: Solve for x
    x = 114,623,993.90/12,144.61
  6. Step 6: Final answer
    x = 9,438.26

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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.