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Finding the Fourth Proportional to 11,586.21, 17,379.20 and 2,821.17

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Solution

The fourth proportional to 11,586.21, 17,379.20 and 2,821.17 is: 4,231.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,586.21 : 17,379.20 = 2,821.17 : x
  2. Step 2: Convert to fraction form
    11,586.21/17,379.20 = 2,821.17/x
  3. Step 3: Cross multiply
    11,586.21x = 17,379.20 × 2,821.17
  4. Step 4: Simplify right side
    11,586.21x = 49,029,663.56
  5. Step 5: Solve for x
    x = 49,029,663.56/11,586.21
  6. Step 6: Final answer
    x = 4,231.73

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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.