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Finding the Fourth Proportional to 11,938, 17,892.18 and 7,556.68

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Solution

The fourth proportional to 11,938, 17,892.18 and 7,556.68 is: 11,325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938 : 17,892.18 = 7,556.68 : x
  2. Step 2: Convert to fraction form
    11,938/17,892.18 = 7,556.68/x
  3. Step 3: Cross multiply
    11,938x = 17,892.18 × 7,556.68
  4. Step 4: Simplify right side
    11,938x = 135,205,478.76
  5. Step 5: Solve for x
    x = 135,205,478.76/11,938
  6. Step 6: Final answer
    x = 11,325.64

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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.