Home / 20,791.68-31,198.32-15,892.80

Finding the Fourth Proportional to 20,791.68, 31,198.32 and 15,892.80

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Solution

The fourth proportional to 20,791.68, 31,198.32 and 15,892.80 is: 23,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.68 : 31,198.32 = 15,892.80 : x
  2. Step 2: Convert to fraction form
    20,791.68/31,198.32 = 15,892.80/x
  3. Step 3: Cross multiply
    20,791.68x = 31,198.32 × 15,892.80
  4. Step 4: Simplify right side
    20,791.68x = 495,828,660.10
  5. Step 5: Solve for x
    x = 495,828,660.10/20,791.68
  6. Step 6: Final answer
    x = 23,847.46

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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.