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Finding the Fourth Proportional to 11,699.08, 17,553.50 and 5,129.98

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Solution

The fourth proportional to 11,699.08, 17,553.50 and 5,129.98 is: 7,697.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,699.08 : 17,553.50 = 5,129.98 : x
  2. Step 2: Convert to fraction form
    11,699.08/17,553.50 = 5,129.98/x
  3. Step 3: Cross multiply
    11,699.08x = 17,553.50 × 5,129.98
  4. Step 4: Simplify right side
    11,699.08x = 90,049,078.28
  5. Step 5: Solve for x
    x = 90,049,078.28/11,699.08
  6. Step 6: Final answer
    x = 7,697.11

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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.