Home / 18,664.53-27,996.79-5,515.87

Finding the Fourth Proportional to 18,664.53, 27,996.79 and 5,515.87

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Solution

The fourth proportional to 18,664.53, 27,996.79 and 5,515.87 is: 8,273.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.53 : 27,996.79 = 5,515.87 : x
  2. Step 2: Convert to fraction form
    18,664.53/27,996.79 = 5,515.87/x
  3. Step 3: Cross multiply
    18,664.53x = 27,996.79 × 5,515.87
  4. Step 4: Simplify right side
    18,664.53x = 154,426,711.85
  5. Step 5: Solve for x
    x = 154,426,711.85/18,664.53
  6. Step 6: Final answer
    x = 8,273.81

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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.