Home / 18,213.44-27,327.04-7,128.05

Finding the Fourth Proportional to 18,213.44, 27,327.04 and 7,128.05

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Solution

The fourth proportional to 18,213.44, 27,327.04 and 7,128.05 is: 10,694.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.44 : 27,327.04 = 7,128.05 : x
  2. Step 2: Convert to fraction form
    18,213.44/27,327.04 = 7,128.05/x
  3. Step 3: Cross multiply
    18,213.44x = 27,327.04 × 7,128.05
  4. Step 4: Simplify right side
    18,213.44x = 194,788,353.02
  5. Step 5: Solve for x
    x = 194,788,353.02/18,213.44
  6. Step 6: Final answer
    x = 10,694.76

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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.