Home / 13,769.90-20,655.04-3,381.64

Finding the Fourth Proportional to 13,769.90, 20,655.04 and 3,381.64

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Solution

The fourth proportional to 13,769.90, 20,655.04 and 3,381.64 is: 5,072.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.90 : 20,655.04 = 3,381.64 : x
  2. Step 2: Convert to fraction form
    13,769.90/20,655.04 = 3,381.64/x
  3. Step 3: Cross multiply
    13,769.90x = 20,655.04 × 3,381.64
  4. Step 4: Simplify right side
    13,769.90x = 69,847,909.47
  5. Step 5: Solve for x
    x = 69,847,909.47/13,769.90
  6. Step 6: Final answer
    x = 5,072.51

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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.