Home / 20,664.13-30,998.49-6,620.86

Finding the Fourth Proportional to 20,664.13, 30,998.49 and 6,620.86

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Solution

The fourth proportional to 20,664.13, 30,998.49 and 6,620.86 is: 9,932.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.13 : 30,998.49 = 6,620.86 : x
  2. Step 2: Convert to fraction form
    20,664.13/30,998.49 = 6,620.86/x
  3. Step 3: Cross multiply
    20,664.13x = 30,998.49 × 6,620.86
  4. Step 4: Simplify right side
    20,664.13x = 205,236,662.50
  5. Step 5: Solve for x
    x = 205,236,662.50/20,664.13
  6. Step 6: Final answer
    x = 9,932.03

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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.