Home / 13,198.30-18,213.64-7,229.96

Finding the Fourth Proportional to 13,198.30, 18,213.64 and 7,229.96

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Solution

The fourth proportional to 13,198.30, 18,213.64 and 7,229.96 is: 9,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.30 : 18,213.64 = 7,229.96 : x
  2. Step 2: Convert to fraction form
    13,198.30/18,213.64 = 7,229.96/x
  3. Step 3: Cross multiply
    13,198.30x = 18,213.64 × 7,229.96
  4. Step 4: Simplify right side
    13,198.30x = 131,683,943.23
  5. Step 5: Solve for x
    x = 131,683,943.23/13,198.30
  6. Step 6: Final answer
    x = 9,977.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.