Home / 20,383.26-30,556.62-12,966.90

Finding the Fourth Proportional to 20,383.26, 30,556.62 and 12,966.90

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Solution

The fourth proportional to 20,383.26, 30,556.62 and 12,966.90 is: 19,438.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.26 : 30,556.62 = 12,966.90 : x
  2. Step 2: Convert to fraction form
    20,383.26/30,556.62 = 12,966.90/x
  3. Step 3: Cross multiply
    20,383.26x = 30,556.62 × 12,966.90
  4. Step 4: Simplify right side
    20,383.26x = 396,224,635.88
  5. Step 5: Solve for x
    x = 396,224,635.88/20,383.26
  6. Step 6: Final answer
    x = 19,438.73

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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.