Home / 20,922.30-31,383.71-6,131.52

Finding the Fourth Proportional to 20,922.30, 31,383.71 and 6,131.52

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Solution

The fourth proportional to 20,922.30, 31,383.71 and 6,131.52 is: 9,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.30 : 31,383.71 = 6,131.52 : x
  2. Step 2: Convert to fraction form
    20,922.30/31,383.71 = 6,131.52/x
  3. Step 3: Cross multiply
    20,922.30x = 31,383.71 × 6,131.52
  4. Step 4: Simplify right side
    20,922.30x = 192,429,845.54
  5. Step 5: Solve for x
    x = 192,429,845.54/20,922.30
  6. Step 6: Final answer
    x = 9,197.36

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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.