Home / 31,225.52-43,120.12-20,067.12

Finding the Fourth Proportional to 31,225.52, 43,120.12 and 20,067.12

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Solution

The fourth proportional to 31,225.52, 43,120.12 and 20,067.12 is: 27,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,225.52 : 43,120.12 = 20,067.12 : x
  2. Step 2: Convert to fraction form
    31,225.52/43,120.12 = 20,067.12/x
  3. Step 3: Cross multiply
    31,225.52x = 43,120.12 × 20,067.12
  4. Step 4: Simplify right side
    31,225.52x = 865,296,622.45
  5. Step 5: Solve for x
    x = 865,296,622.45/31,225.52
  6. Step 6: Final answer
    x = 27,711.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.