Home / 31,067.18-42,872.91-16,920.08

Finding the Fourth Proportional to 31,067.18, 42,872.91 and 16,920.08

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Solution

The fourth proportional to 31,067.18, 42,872.91 and 16,920.08 is: 23,349.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,067.18 : 42,872.91 = 16,920.08 : x
  2. Step 2: Convert to fraction form
    31,067.18/42,872.91 = 16,920.08/x
  3. Step 3: Cross multiply
    31,067.18x = 42,872.91 × 16,920.08
  4. Step 4: Simplify right side
    31,067.18x = 725,413,067.03
  5. Step 5: Solve for x
    x = 725,413,067.03/31,067.18
  6. Step 6: Final answer
    x = 23,349.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.