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Finding the Fourth Proportional to 11,788.86, 17,686.98 and 4,393.92

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Solution

The fourth proportional to 11,788.86, 17,686.98 and 4,393.92 is: 6,592.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,788.86 : 17,686.98 = 4,393.92 : x
  2. Step 2: Convert to fraction form
    11,788.86/17,686.98 = 4,393.92/x
  3. Step 3: Cross multiply
    11,788.86x = 17,686.98 × 4,393.92
  4. Step 4: Simplify right side
    11,788.86x = 77,715,175.16
  5. Step 5: Solve for x
    x = 77,715,175.16/11,788.86
  6. Step 6: Final answer
    x = 6,592.26

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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.