Home / 13,199.76-19,796.40-5,410.80

Finding the Fourth Proportional to 13,199.76, 19,796.40 and 5,410.80

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Solution

The fourth proportional to 13,199.76, 19,796.40 and 5,410.80 is: 8,114.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.76 : 19,796.40 = 5,410.80 : x
  2. Step 2: Convert to fraction form
    13,199.76/19,796.40 = 5,410.80/x
  3. Step 3: Cross multiply
    13,199.76x = 19,796.40 × 5,410.80
  4. Step 4: Simplify right side
    13,199.76x = 107,114,361.12
  5. Step 5: Solve for x
    x = 107,114,361.12/13,199.76
  6. Step 6: Final answer
    x = 8,114.87

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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.