Home / 20,502.52-30,732.82-7,171.54

Finding the Fourth Proportional to 20,502.52, 30,732.82 and 7,171.54

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Solution

The fourth proportional to 20,502.52, 30,732.82 and 7,171.54 is: 10,749.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.52 : 30,732.82 = 7,171.54 : x
  2. Step 2: Convert to fraction form
    20,502.52/30,732.82 = 7,171.54/x
  3. Step 3: Cross multiply
    20,502.52x = 30,732.82 × 7,171.54
  4. Step 4: Simplify right side
    20,502.52x = 220,401,553.18
  5. Step 5: Solve for x
    x = 220,401,553.18/20,502.52
  6. Step 6: Final answer
    x = 10,749.98

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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.