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Finding the Fourth Proportional to 12,144.87, 16,760.43 and 6,839.67

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Solution

The fourth proportional to 12,144.87, 16,760.43 and 6,839.67 is: 9,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.87 : 16,760.43 = 6,839.67 : x
  2. Step 2: Convert to fraction form
    12,144.87/16,760.43 = 6,839.67/x
  3. Step 3: Cross multiply
    12,144.87x = 16,760.43 × 6,839.67
  4. Step 4: Simplify right side
    12,144.87x = 114,635,810.26
  5. Step 5: Solve for x
    x = 114,635,810.26/12,144.87
  6. Step 6: Final answer
    x = 9,439.03

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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.