Home / 20,669.27-30,998.43-8,979.75

Finding the Fourth Proportional to 20,669.27, 30,998.43 and 8,979.75

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Solution

The fourth proportional to 20,669.27, 30,998.43 and 8,979.75 is: 13,467.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.27 : 30,998.43 = 8,979.75 : x
  2. Step 2: Convert to fraction form
    20,669.27/30,998.43 = 8,979.75/x
  3. Step 3: Cross multiply
    20,669.27x = 30,998.43 × 8,979.75
  4. Step 4: Simplify right side
    20,669.27x = 278,358,151.79
  5. Step 5: Solve for x
    x = 278,358,151.79/20,669.27
  6. Step 6: Final answer
    x = 13,467.25

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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.