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Finding the Fourth Proportional to 11,129.43, 16,694.11 and 2,810.11

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Solution

The fourth proportional to 11,129.43, 16,694.11 and 2,810.11 is: 4,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.43 : 16,694.11 = 2,810.11 : x
  2. Step 2: Convert to fraction form
    11,129.43/16,694.11 = 2,810.11/x
  3. Step 3: Cross multiply
    11,129.43x = 16,694.11 × 2,810.11
  4. Step 4: Simplify right side
    11,129.43x = 46,912,285.45
  5. Step 5: Solve for x
    x = 46,912,285.45/11,129.43
  6. Step 6: Final answer
    x = 4,215.16

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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.