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Finding the Fourth Proportional to 11,912.29, 17,839.98 and 6,634.18

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Solution

The fourth proportional to 11,912.29, 17,839.98 and 6,634.18 is: 9,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.29 : 17,839.98 = 6,634.18 : x
  2. Step 2: Convert to fraction form
    11,912.29/17,839.98 = 6,634.18/x
  3. Step 3: Cross multiply
    11,912.29x = 17,839.98 × 6,634.18
  4. Step 4: Simplify right side
    11,912.29x = 118,353,638.52
  5. Step 5: Solve for x
    x = 118,353,638.52/11,912.29
  6. Step 6: Final answer
    x = 9,935.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.