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Finding the Fourth Proportional to 12,839.03, 17,708.10 and 11,049.48

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Solution

The fourth proportional to 12,839.03, 17,708.10 and 11,049.48 is: 15,239.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.03 : 17,708.10 = 11,049.48 : x
  2. Step 2: Convert to fraction form
    12,839.03/17,708.10 = 11,049.48/x
  3. Step 3: Cross multiply
    12,839.03x = 17,708.10 × 11,049.48
  4. Step 4: Simplify right side
    12,839.03x = 195,665,296.79
  5. Step 5: Solve for x
    x = 195,665,296.79/12,839.03
  6. Step 6: Final answer
    x = 15,239.89

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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.