Home / 18,820.82-28,234.30-7,724.53

Finding the Fourth Proportional to 18,820.82, 28,234.30 and 7,724.53

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Solution

The fourth proportional to 18,820.82, 28,234.30 and 7,724.53 is: 11,588.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.82 : 28,234.30 = 7,724.53 : x
  2. Step 2: Convert to fraction form
    18,820.82/28,234.30 = 7,724.53/x
  3. Step 3: Cross multiply
    18,820.82x = 28,234.30 × 7,724.53
  4. Step 4: Simplify right side
    18,820.82x = 218,096,697.38
  5. Step 5: Solve for x
    x = 218,096,697.38/18,820.82
  6. Step 6: Final answer
    x = 11,588.06

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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.