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Finding the Fourth Proportional to 10,691.43, 16,039.22 and 4,448.09

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Solution

The fourth proportional to 10,691.43, 16,039.22 and 4,448.09 is: 6,672.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,691.43 : 16,039.22 = 4,448.09 : x
  2. Step 2: Convert to fraction form
    10,691.43/16,039.22 = 4,448.09/x
  3. Step 3: Cross multiply
    10,691.43x = 16,039.22 × 4,448.09
  4. Step 4: Simplify right side
    10,691.43x = 71,343,791.65
  5. Step 5: Solve for x
    x = 71,343,791.65/10,691.43
  6. Step 6: Final answer
    x = 6,672.99

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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.