Home / 20,676.22-30,971.31-17,157.94

Finding the Fourth Proportional to 20,676.22, 30,971.31 and 17,157.94

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Solution

The fourth proportional to 20,676.22, 30,971.31 and 17,157.94 is: 25,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.22 : 30,971.31 = 17,157.94 : x
  2. Step 2: Convert to fraction form
    20,676.22/30,971.31 = 17,157.94/x
  3. Step 3: Cross multiply
    20,676.22x = 30,971.31 × 17,157.94
  4. Step 4: Simplify right side
    20,676.22x = 531,403,878.70
  5. Step 5: Solve for x
    x = 531,403,878.70/20,676.22
  6. Step 6: Final answer
    x = 25,701.21

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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.