Home / 18,217.71-27,333.23-7,690.41

Finding the Fourth Proportional to 18,217.71, 27,333.23 and 7,690.41

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Solution

The fourth proportional to 18,217.71, 27,333.23 and 7,690.41 is: 11,538.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.71 : 27,333.23 = 7,690.41 : x
  2. Step 2: Convert to fraction form
    18,217.71/27,333.23 = 7,690.41/x
  3. Step 3: Cross multiply
    18,217.71x = 27,333.23 × 7,690.41
  4. Step 4: Simplify right side
    18,217.71x = 210,203,706.87
  5. Step 5: Solve for x
    x = 210,203,706.87/18,217.71
  6. Step 6: Final answer
    x = 11,538.43

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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.