Home / 20,810.58-28,850.28-19,687.92

Finding the Fourth Proportional to 20,810.58, 28,850.28 and 19,687.92

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Solution

The fourth proportional to 20,810.58, 28,850.28 and 19,687.92 is: 27,293.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.58 : 28,850.28 = 19,687.92 : x
  2. Step 2: Convert to fraction form
    20,810.58/28,850.28 = 19,687.92/x
  3. Step 3: Cross multiply
    20,810.58x = 28,850.28 × 19,687.92
  4. Step 4: Simplify right side
    20,810.58x = 568,002,004.62
  5. Step 5: Solve for x
    x = 568,002,004.62/20,810.58
  6. Step 6: Final answer
    x = 27,293.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.