Home / 14,067.80-21,104.90-8,221.40

Finding the Fourth Proportional to 14,067.80, 21,104.90 and 8,221.40

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Solution

The fourth proportional to 14,067.80, 21,104.90 and 8,221.40 is: 12,333.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,067.80 : 21,104.90 = 8,221.40 : x
  2. Step 2: Convert to fraction form
    14,067.80/21,104.90 = 8,221.40/x
  3. Step 3: Cross multiply
    14,067.80x = 21,104.90 × 8,221.40
  4. Step 4: Simplify right side
    14,067.80x = 173,511,824.86
  5. Step 5: Solve for x
    x = 173,511,824.86/14,067.80
  6. Step 6: Final answer
    x = 12,333.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.