Home / 13,769.76-20,654.28-3,381.60

Finding the Fourth Proportional to 13,769.76, 20,654.28 and 3,381.60

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Solution

The fourth proportional to 13,769.76, 20,654.28 and 3,381.60 is: 5,072.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.76 : 20,654.28 = 3,381.60 : x
  2. Step 2: Convert to fraction form
    13,769.76/20,654.28 = 3,381.60/x
  3. Step 3: Cross multiply
    13,769.76x = 20,654.28 × 3,381.60
  4. Step 4: Simplify right side
    13,769.76x = 69,844,513.25
  5. Step 5: Solve for x
    x = 69,844,513.25/13,769.76
  6. Step 6: Final answer
    x = 5,072.31

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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.