Home / 20,486.91-30,730.97-8,006.43

Finding the Fourth Proportional to 20,486.91, 30,730.97 and 8,006.43

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Solution

The fourth proportional to 20,486.91, 30,730.97 and 8,006.43 is: 12,009.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.91 : 30,730.97 = 8,006.43 : x
  2. Step 2: Convert to fraction form
    20,486.91/30,730.97 = 8,006.43/x
  3. Step 3: Cross multiply
    20,486.91x = 30,730.97 × 8,006.43
  4. Step 4: Simplify right side
    20,486.91x = 246,045,360.14
  5. Step 5: Solve for x
    x = 246,045,360.14/20,486.91
  6. Step 6: Final answer
    x = 12,009.88

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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.