Home / 19,872.60-27,418.21-11,911.92

Finding the Fourth Proportional to 19,872.60, 27,418.21 and 11,911.92

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Solution

The fourth proportional to 19,872.60, 27,418.21 and 11,911.92 is: 16,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.60 : 27,418.21 = 11,911.92 : x
  2. Step 2: Convert to fraction form
    19,872.60/27,418.21 = 11,911.92/x
  3. Step 3: Cross multiply
    19,872.60x = 27,418.21 × 11,911.92
  4. Step 4: Simplify right side
    19,872.60x = 326,603,494.28
  5. Step 5: Solve for x
    x = 326,603,494.28/19,872.60
  6. Step 6: Final answer
    x = 16,434.86

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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.