Home / 13,768.52-20,649.87-3,905.15

Finding the Fourth Proportional to 13,768.52, 20,649.87 and 3,905.15

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Solution

The fourth proportional to 13,768.52, 20,649.87 and 3,905.15 is: 5,856.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.52 : 20,649.87 = 3,905.15 : x
  2. Step 2: Convert to fraction form
    13,768.52/20,649.87 = 3,905.15/x
  3. Step 3: Cross multiply
    13,768.52x = 20,649.87 × 3,905.15
  4. Step 4: Simplify right side
    13,768.52x = 80,640,736.58
  5. Step 5: Solve for x
    x = 80,640,736.58/13,768.52
  6. Step 6: Final answer
    x = 5,856.89

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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.