Home / 18,910.38-28,345.77-7,059

Finding the Fourth Proportional to 18,910.38, 28,345.77 and 7,059

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Solution

The fourth proportional to 18,910.38, 28,345.77 and 7,059 is: 10,581.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.38 : 28,345.77 = 7,059 : x
  2. Step 2: Convert to fraction form
    18,910.38/28,345.77 = 7,059/x
  3. Step 3: Cross multiply
    18,910.38x = 28,345.77 × 7,059
  4. Step 4: Simplify right side
    18,910.38x = 200,092,790.43
  5. Step 5: Solve for x
    x = 200,092,790.43/18,910.38
  6. Step 6: Final answer
    x = 10,581.11

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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.