Home / 11,942.88-16,481.28-6,637.80

Finding the Fourth Proportional to 11,942.88, 16,481.28 and 6,637.80

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Solution

The fourth proportional to 11,942.88, 16,481.28 and 6,637.80 is: 9,160.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,942.88 : 16,481.28 = 6,637.80 : x
  2. Step 2: Convert to fraction form
    11,942.88/16,481.28 = 6,637.80/x
  3. Step 3: Cross multiply
    11,942.88x = 16,481.28 × 6,637.80
  4. Step 4: Simplify right side
    11,942.88x = 109,399,440.38
  5. Step 5: Solve for x
    x = 109,399,440.38/11,942.88
  6. Step 6: Final answer
    x = 9,160.22

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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.