Home / 21,067.14-29,077.64-12,119.82

Finding the Fourth Proportional to 21,067.14, 29,077.64 and 12,119.82

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Solution

The fourth proportional to 21,067.14, 29,077.64 and 12,119.82 is: 16,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.14 : 29,077.64 = 12,119.82 : x
  2. Step 2: Convert to fraction form
    21,067.14/29,077.64 = 12,119.82/x
  3. Step 3: Cross multiply
    21,067.14x = 29,077.64 × 12,119.82
  4. Step 4: Simplify right side
    21,067.14x = 352,415,702.23
  5. Step 5: Solve for x
    x = 352,415,702.23/21,067.14
  6. Step 6: Final answer
    x = 16,728.22

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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.