Home / 20,922.33-31,383.76-6,131.55

Finding the Fourth Proportional to 20,922.33, 31,383.76 and 6,131.55

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Solution

The fourth proportional to 20,922.33, 31,383.76 and 6,131.55 is: 9,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.33 : 31,383.76 = 6,131.55 : x
  2. Step 2: Convert to fraction form
    20,922.33/31,383.76 = 6,131.55/x
  3. Step 3: Cross multiply
    20,922.33x = 31,383.76 × 6,131.55
  4. Step 4: Simplify right side
    20,922.33x = 192,431,093.63
  5. Step 5: Solve for x
    x = 192,431,093.63/20,922.33
  6. Step 6: Final answer
    x = 9,197.40

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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.