Home / 20,936.78-31,398.42-6,893.46

Finding the Fourth Proportional to 20,936.78, 31,398.42 and 6,893.46

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Solution

The fourth proportional to 20,936.78, 31,398.42 and 6,893.46 is: 10,337.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.78 : 31,398.42 = 6,893.46 : x
  2. Step 2: Convert to fraction form
    20,936.78/31,398.42 = 6,893.46/x
  3. Step 3: Cross multiply
    20,936.78x = 31,398.42 × 6,893.46
  4. Step 4: Simplify right side
    20,936.78x = 216,443,765.73
  5. Step 5: Solve for x
    x = 216,443,765.73/20,936.78
  6. Step 6: Final answer
    x = 10,337.97

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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.