Home / 12,755.36-17,610.90-7,982.54

Finding the Fourth Proportional to 12,755.36, 17,610.90 and 7,982.54

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Solution

The fourth proportional to 12,755.36, 17,610.90 and 7,982.54 is: 11,021.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.36 : 17,610.90 = 7,982.54 : x
  2. Step 2: Convert to fraction form
    12,755.36/17,610.90 = 7,982.54/x
  3. Step 3: Cross multiply
    12,755.36x = 17,610.90 × 7,982.54
  4. Step 4: Simplify right side
    12,755.36x = 140,579,713.69
  5. Step 5: Solve for x
    x = 140,579,713.69/12,755.36
  6. Step 6: Final answer
    x = 11,021.23

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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.