Home / 20,310.68-30,383.40-17,171.12

Finding the Fourth Proportional to 20,310.68, 30,383.40 and 17,171.12

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Solution

The fourth proportional to 20,310.68, 30,383.40 and 17,171.12 is: 25,686.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.68 : 30,383.40 = 17,171.12 : x
  2. Step 2: Convert to fraction form
    20,310.68/30,383.40 = 17,171.12/x
  3. Step 3: Cross multiply
    20,310.68x = 30,383.40 × 17,171.12
  4. Step 4: Simplify right side
    20,310.68x = 521,717,007.41
  5. Step 5: Solve for x
    x = 521,717,007.41/20,310.68
  6. Step 6: Final answer
    x = 25,686.83

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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.