Home / 13,351.24-20,022.08-3,989.52

Finding the Fourth Proportional to 13,351.24, 20,022.08 and 3,989.52

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Solution

The fourth proportional to 13,351.24, 20,022.08 and 3,989.52 is: 5,982.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.24 : 20,022.08 = 3,989.52 : x
  2. Step 2: Convert to fraction form
    13,351.24/20,022.08 = 3,989.52/x
  3. Step 3: Cross multiply
    13,351.24x = 20,022.08 × 3,989.52
  4. Step 4: Simplify right side
    13,351.24x = 79,878,393.57
  5. Step 5: Solve for x
    x = 79,878,393.57/13,351.24
  6. Step 6: Final answer
    x = 5,982.84

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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.