Home / 13,936.96-20,905.35-3,407.02

Finding the Fourth Proportional to 13,936.96, 20,905.35 and 3,407.02

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Solution

The fourth proportional to 13,936.96, 20,905.35 and 3,407.02 is: 5,110.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936.96 : 20,905.35 = 3,407.02 : x
  2. Step 2: Convert to fraction form
    13,936.96/20,905.35 = 3,407.02/x
  3. Step 3: Cross multiply
    13,936.96x = 20,905.35 × 3,407.02
  4. Step 4: Simplify right side
    13,936.96x = 71,224,945.56
  5. Step 5: Solve for x
    x = 71,224,945.56/13,936.96
  6. Step 6: Final answer
    x = 5,110.51

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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.