Home / 20,144.45-30,212.12-7,660.02

Finding the Fourth Proportional to 20,144.45, 30,212.12 and 7,660.02

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Solution

The fourth proportional to 20,144.45, 30,212.12 and 7,660.02 is: 11,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.45 : 30,212.12 = 7,660.02 : x
  2. Step 2: Convert to fraction form
    20,144.45/30,212.12 = 7,660.02/x
  3. Step 3: Cross multiply
    20,144.45x = 30,212.12 × 7,660.02
  4. Step 4: Simplify right side
    20,144.45x = 231,425,405.14
  5. Step 5: Solve for x
    x = 231,425,405.14/20,144.45
  6. Step 6: Final answer
    x = 11,488.30

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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.