Home / 11,918.78-16,443.21-6,882.02

Finding the Fourth Proportional to 11,918.78, 16,443.21 and 6,882.02

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Solution

The fourth proportional to 11,918.78, 16,443.21 and 6,882.02 is: 9,494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.78 : 16,443.21 = 6,882.02 : x
  2. Step 2: Convert to fraction form
    11,918.78/16,443.21 = 6,882.02/x
  3. Step 3: Cross multiply
    11,918.78x = 16,443.21 × 6,882.02
  4. Step 4: Simplify right side
    11,918.78x = 113,162,417.87
  5. Step 5: Solve for x
    x = 113,162,417.87/11,918.78
  6. Step 6: Final answer
    x = 9,494.47

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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.