Home / 18,515.82-27,755.28-11,946.62

Finding the Fourth Proportional to 18,515.82, 27,755.28 and 11,946.62

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Solution

The fourth proportional to 18,515.82, 27,755.28 and 11,946.62 is: 17,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.82 : 27,755.28 = 11,946.62 : x
  2. Step 2: Convert to fraction form
    18,515.82/27,755.28 = 11,946.62/x
  3. Step 3: Cross multiply
    18,515.82x = 27,755.28 × 11,946.62
  4. Step 4: Simplify right side
    18,515.82x = 331,581,644.38
  5. Step 5: Solve for x
    x = 331,581,644.38/18,515.82
  6. Step 6: Final answer
    x = 17,908.02

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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.