Home / 11,188.45-16,781.79-6,505.47

Finding the Fourth Proportional to 11,188.45, 16,781.79 and 6,505.47

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Solution

The fourth proportional to 11,188.45, 16,781.79 and 6,505.47 is: 9,757.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.45 : 16,781.79 = 6,505.47 : x
  2. Step 2: Convert to fraction form
    11,188.45/16,781.79 = 6,505.47/x
  3. Step 3: Cross multiply
    11,188.45x = 16,781.79 × 6,505.47
  4. Step 4: Simplify right side
    11,188.45x = 109,173,431.39
  5. Step 5: Solve for x
    x = 109,173,431.39/11,188.45
  6. Step 6: Final answer
    x = 9,757.69

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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.