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Finding the Fourth Proportional to 18,505.71, 27,763.12 and 5,359.41

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Solution

The fourth proportional to 18,505.71, 27,763.12 and 5,359.41 is: 8,040.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.71 : 27,763.12 = 5,359.41 : x
  2. Step 2: Convert to fraction form
    18,505.71/27,763.12 = 5,359.41/x
  3. Step 3: Cross multiply
    18,505.71x = 27,763.12 × 5,359.41
  4. Step 4: Simplify right side
    18,505.71x = 148,793,942.96
  5. Step 5: Solve for x
    x = 148,793,942.96/18,505.71
  6. Step 6: Final answer
    x = 8,040.43

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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.