Home / 20,922.18-31,383.27-6,131.10

Finding the Fourth Proportional to 20,922.18, 31,383.27 and 6,131.10

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Solution

The fourth proportional to 20,922.18, 31,383.27 and 6,131.10 is: 9,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.18 : 31,383.27 = 6,131.10 : x
  2. Step 2: Convert to fraction form
    20,922.18/31,383.27 = 6,131.10/x
  3. Step 3: Cross multiply
    20,922.18x = 31,383.27 × 6,131.10
  4. Step 4: Simplify right side
    20,922.18x = 192,413,966.70
  5. Step 5: Solve for x
    x = 192,413,966.70/20,922.18
  6. Step 6: Final answer
    x = 9,196.65

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Similar ratio
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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.