Home / 20,800.38-31,189.62-17,891.66

Finding the Fourth Proportional to 20,800.38, 31,189.62 and 17,891.66

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Solution

The fourth proportional to 20,800.38, 31,189.62 and 17,891.66 is: 26,828.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.38 : 31,189.62 = 17,891.66 : x
  2. Step 2: Convert to fraction form
    20,800.38/31,189.62 = 17,891.66/x
  3. Step 3: Cross multiply
    20,800.38x = 31,189.62 × 17,891.66
  4. Step 4: Simplify right side
    20,800.38x = 558,034,076.57
  5. Step 5: Solve for x
    x = 558,034,076.57/20,800.38
  6. Step 6: Final answer
    x = 26,828.07

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1.5x scale

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.