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Finding the Fourth Proportional to 11,619.78, 17,429.70 and 5,463.78

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Solution

The fourth proportional to 11,619.78, 17,429.70 and 5,463.78 is: 8,195.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,619.78 : 17,429.70 = 5,463.78 : x
  2. Step 2: Convert to fraction form
    11,619.78/17,429.70 = 5,463.78/x
  3. Step 3: Cross multiply
    11,619.78x = 17,429.70 × 5,463.78
  4. Step 4: Simplify right side
    11,619.78x = 95,232,046.27
  5. Step 5: Solve for x
    x = 95,232,046.27/11,619.78
  6. Step 6: Final answer
    x = 8,195.68

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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.