Home / 20,845.21-31,270.81-6,801.76

Finding the Fourth Proportional to 20,845.21, 31,270.81 and 6,801.76

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Solution

The fourth proportional to 20,845.21, 31,270.81 and 6,801.76 is: 10,203.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.21 : 31,270.81 = 6,801.76 : x
  2. Step 2: Convert to fraction form
    20,845.21/31,270.81 = 6,801.76/x
  3. Step 3: Cross multiply
    20,845.21x = 31,270.81 × 6,801.76
  4. Step 4: Simplify right side
    20,845.21x = 212,696,403.56
  5. Step 5: Solve for x
    x = 212,696,403.56/20,845.21
  6. Step 6: Final answer
    x = 10,203.61

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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.