Home / 20,147.73-30,214.35-7,664.43

Finding the Fourth Proportional to 20,147.73, 30,214.35 and 7,664.43

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Solution

The fourth proportional to 20,147.73, 30,214.35 and 7,664.43 is: 11,493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.73 : 30,214.35 = 7,664.43 : x
  2. Step 2: Convert to fraction form
    20,147.73/30,214.35 = 7,664.43/x
  3. Step 3: Cross multiply
    20,147.73x = 30,214.35 × 7,664.43
  4. Step 4: Simplify right side
    20,147.73x = 231,575,770.57
  5. Step 5: Solve for x
    x = 231,575,770.57/20,147.73
  6. Step 6: Final answer
    x = 11,493.89

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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.