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Finding the Fourth Proportional to 11,469.88, 15,824.64 and 6,992.56

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Solution

The fourth proportional to 11,469.88, 15,824.64 and 6,992.56 is: 9,647.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,469.88 : 15,824.64 = 6,992.56 : x
  2. Step 2: Convert to fraction form
    11,469.88/15,824.64 = 6,992.56/x
  3. Step 3: Cross multiply
    11,469.88x = 15,824.64 × 6,992.56
  4. Step 4: Simplify right side
    11,469.88x = 110,654,744.68
  5. Step 5: Solve for x
    x = 110,654,744.68/11,469.88
  6. Step 6: Final answer
    x = 9,647.42

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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.