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Finding the Fourth Proportional to 10,493.29, 15,740.01 and 3,919.42

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Solution

The fourth proportional to 10,493.29, 15,740.01 and 3,919.42 is: 5,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,493.29 : 15,740.01 = 3,919.42 : x
  2. Step 2: Convert to fraction form
    10,493.29/15,740.01 = 3,919.42/x
  3. Step 3: Cross multiply
    10,493.29x = 15,740.01 × 3,919.42
  4. Step 4: Simplify right side
    10,493.29x = 61,691,709.99
  5. Step 5: Solve for x
    x = 61,691,709.99/10,493.29
  6. Step 6: Final answer
    x = 5,879.16

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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.