Home / 20,922.38-31,383.73-7,774.73

Finding the Fourth Proportional to 20,922.38, 31,383.73 and 7,774.73

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Solution

The fourth proportional to 20,922.38, 31,383.73 and 7,774.73 is: 11,662.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.38 : 31,383.73 = 7,774.73 : x
  2. Step 2: Convert to fraction form
    20,922.38/31,383.73 = 7,774.73/x
  3. Step 3: Cross multiply
    20,922.38x = 31,383.73 × 7,774.73
  4. Step 4: Simplify right side
    20,922.38x = 244,000,152.30
  5. Step 5: Solve for x
    x = 244,000,152.30/20,922.38
  6. Step 6: Final answer
    x = 11,662.16

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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.