Home / 11,112.97-16,669.43-5,187.87

Finding the Fourth Proportional to 11,112.97, 16,669.43 and 5,187.87

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Solution

The fourth proportional to 11,112.97, 16,669.43 and 5,187.87 is: 7,781.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.97 : 16,669.43 = 5,187.87 : x
  2. Step 2: Convert to fraction form
    11,112.97/16,669.43 = 5,187.87/x
  3. Step 3: Cross multiply
    11,112.97x = 16,669.43 × 5,187.87
  4. Step 4: Simplify right side
    11,112.97x = 86,478,776.20
  5. Step 5: Solve for x
    x = 86,478,776.20/11,112.97
  6. Step 6: Final answer
    x = 7,781.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.