Home / 13,936.51-20,905.04-3,406.56

Finding the Fourth Proportional to 13,936.51, 20,905.04 and 3,406.56

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Solution

The fourth proportional to 13,936.51, 20,905.04 and 3,406.56 is: 5,109.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936.51 : 20,905.04 = 3,406.56 : x
  2. Step 2: Convert to fraction form
    13,936.51/20,905.04 = 3,406.56/x
  3. Step 3: Cross multiply
    13,936.51x = 20,905.04 × 3,406.56
  4. Step 4: Simplify right side
    13,936.51x = 71,214,273.06
  5. Step 5: Solve for x
    x = 71,214,273.06/13,936.51
  6. Step 6: Final answer
    x = 5,109.91

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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.