Home / 18,500.56-27,761.10-8,112.04

Finding the Fourth Proportional to 18,500.56, 27,761.10 and 8,112.04

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Solution

The fourth proportional to 18,500.56, 27,761.10 and 8,112.04 is: 12,172.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.56 : 27,761.10 = 8,112.04 : x
  2. Step 2: Convert to fraction form
    18,500.56/27,761.10 = 8,112.04/x
  3. Step 3: Cross multiply
    18,500.56x = 27,761.10 × 8,112.04
  4. Step 4: Simplify right side
    18,500.56x = 225,199,153.64
  5. Step 5: Solve for x
    x = 225,199,153.64/18,500.56
  6. Step 6: Final answer
    x = 12,172.56

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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.