Home / 11,997.92-16,561.36-7,910.06

Finding the Fourth Proportional to 11,997.92, 16,561.36 and 7,910.06

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Solution

The fourth proportional to 11,997.92, 16,561.36 and 7,910.06 is: 10,918.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,997.92 : 16,561.36 = 7,910.06 : x
  2. Step 2: Convert to fraction form
    11,997.92/16,561.36 = 7,910.06/x
  3. Step 3: Cross multiply
    11,997.92x = 16,561.36 × 7,910.06
  4. Step 4: Simplify right side
    11,997.92x = 131,001,278.36
  5. Step 5: Solve for x
    x = 131,001,278.36/11,997.92
  6. Step 6: Final answer
    x = 10,918.66

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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.