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Finding the Fourth Proportional to 11,392.08, 17,092.80 and 5,150.40

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Solution

The fourth proportional to 11,392.08, 17,092.80 and 5,150.40 is: 7,727.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.08 : 17,092.80 = 5,150.40 : x
  2. Step 2: Convert to fraction form
    11,392.08/17,092.80 = 5,150.40/x
  3. Step 3: Cross multiply
    11,392.08x = 17,092.80 × 5,150.40
  4. Step 4: Simplify right side
    11,392.08x = 88,034,757.12
  5. Step 5: Solve for x
    x = 88,034,757.12/11,392.08
  6. Step 6: Final answer
    x = 7,727.72

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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.