Home / 13,198.33-18,213.70-7,230.22

Finding the Fourth Proportional to 13,198.33, 18,213.70 and 7,230.22

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Solution

The fourth proportional to 13,198.33, 18,213.70 and 7,230.22 is: 9,977.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.33 : 18,213.70 = 7,230.22 : x
  2. Step 2: Convert to fraction form
    13,198.33/18,213.70 = 7,230.22/x
  3. Step 3: Cross multiply
    13,198.33x = 18,213.70 × 7,230.22
  4. Step 4: Simplify right side
    13,198.33x = 131,689,058.01
  5. Step 5: Solve for x
    x = 131,689,058.01/13,198.33
  6. Step 6: Final answer
    x = 9,977.71

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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.