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Finding the Fourth Proportional to 18,371.10, 27,562.41 and 10,983.90

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Solution

The fourth proportional to 18,371.10, 27,562.41 and 10,983.90 is: 16,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.10 : 27,562.41 = 10,983.90 : x
  2. Step 2: Convert to fraction form
    18,371.10/27,562.41 = 10,983.90/x
  3. Step 3: Cross multiply
    18,371.10x = 27,562.41 × 10,983.90
  4. Step 4: Simplify right side
    18,371.10x = 302,742,755.20
  5. Step 5: Solve for x
    x = 302,742,755.20/18,371.10
  6. Step 6: Final answer
    x = 16,479.29

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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.