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Finding the Fourth Proportional to 10,821.26, 16,231.90 and 2,613.26

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Solution

The fourth proportional to 10,821.26, 16,231.90 and 2,613.26 is: 3,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.26 : 16,231.90 = 2,613.26 : x
  2. Step 2: Convert to fraction form
    10,821.26/16,231.90 = 2,613.26/x
  3. Step 3: Cross multiply
    10,821.26x = 16,231.90 × 2,613.26
  4. Step 4: Simplify right side
    10,821.26x = 42,418,174.99
  5. Step 5: Solve for x
    x = 42,418,174.99/10,821.26
  6. Step 6: Final answer
    x = 3,919.89

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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.