Home / 13,821.76-20,713.16-10,361.44

Finding the Fourth Proportional to 13,821.76, 20,713.16 and 10,361.44

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Solution

The fourth proportional to 13,821.76, 20,713.16 and 10,361.44 is: 15,527.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.76 : 20,713.16 = 10,361.44 : x
  2. Step 2: Convert to fraction form
    13,821.76/20,713.16 = 10,361.44/x
  3. Step 3: Cross multiply
    13,821.76x = 20,713.16 × 10,361.44
  4. Step 4: Simplify right side
    13,821.76x = 214,618,164.55
  5. Step 5: Solve for x
    x = 214,618,164.55/13,821.76
  6. Step 6: Final answer
    x = 15,527.56

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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.