Home / 13,208.70-18,229.68-7,906.44

Finding the Fourth Proportional to 13,208.70, 18,229.68 and 7,906.44

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Solution

The fourth proportional to 13,208.70, 18,229.68 and 7,906.44 is: 10,911.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.70 : 18,229.68 = 7,906.44 : x
  2. Step 2: Convert to fraction form
    13,208.70/18,229.68 = 7,906.44/x
  3. Step 3: Cross multiply
    13,208.70x = 18,229.68 × 7,906.44
  4. Step 4: Simplify right side
    13,208.70x = 144,131,871.14
  5. Step 5: Solve for x
    x = 144,131,871.14/13,208.70
  6. Step 6: Final answer
    x = 10,911.89

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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.