Home / 13,451.28-20,172.03-5,133.60

Finding the Fourth Proportional to 13,451.28, 20,172.03 and 5,133.60

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Solution

The fourth proportional to 13,451.28, 20,172.03 and 5,133.60 is: 7,698.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.28 : 20,172.03 = 5,133.60 : x
  2. Step 2: Convert to fraction form
    13,451.28/20,172.03 = 5,133.60/x
  3. Step 3: Cross multiply
    13,451.28x = 20,172.03 × 5,133.60
  4. Step 4: Simplify right side
    13,451.28x = 103,555,133.21
  5. Step 5: Solve for x
    x = 103,555,133.21/13,451.28
  6. Step 6: Final answer
    x = 7,698.53

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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.