Home / 21,020.85-29,007.62-12,067.77

Finding the Fourth Proportional to 21,020.85, 29,007.62 and 12,067.77

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Solution

The fourth proportional to 21,020.85, 29,007.62 and 12,067.77 is: 16,652.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.85 : 29,007.62 = 12,067.77 : x
  2. Step 2: Convert to fraction form
    21,020.85/29,007.62 = 12,067.77/x
  3. Step 3: Cross multiply
    21,020.85x = 29,007.62 × 12,067.77
  4. Step 4: Simplify right side
    21,020.85x = 350,057,226.07
  5. Step 5: Solve for x
    x = 350,057,226.07/21,020.85
  6. Step 6: Final answer
    x = 16,652.86

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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.