Home / 20,204.91-30,311.91-7,724.61

Finding the Fourth Proportional to 20,204.91, 30,311.91 and 7,724.61

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Solution

The fourth proportional to 20,204.91, 30,311.91 and 7,724.61 is: 11,588.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204.91 : 30,311.91 = 7,724.61 : x
  2. Step 2: Convert to fraction form
    20,204.91/30,311.91 = 7,724.61/x
  3. Step 3: Cross multiply
    20,204.91x = 30,311.91 × 7,724.61
  4. Step 4: Simplify right side
    20,204.91x = 234,147,683.11
  5. Step 5: Solve for x
    x = 234,147,683.11/20,204.91
  6. Step 6: Final answer
    x = 11,588.65

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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.