Home / 20,162.21-30,243.22-7,679.30

Finding the Fourth Proportional to 20,162.21, 30,243.22 and 7,679.30

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Solution

The fourth proportional to 20,162.21, 30,243.22 and 7,679.30 is: 11,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.21 : 30,243.22 = 7,679.30 : x
  2. Step 2: Convert to fraction form
    20,162.21/30,243.22 = 7,679.30/x
  3. Step 3: Cross multiply
    20,162.21x = 30,243.22 × 7,679.30
  4. Step 4: Simplify right side
    20,162.21x = 232,246,759.35
  5. Step 5: Solve for x
    x = 232,246,759.35/20,162.21
  6. Step 6: Final answer
    x = 11,518.91

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1.5x scale

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.