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Finding the Fourth Proportional to 14,067.68, 21,103.68 and 4,205.84

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Solution

The fourth proportional to 14,067.68, 21,103.68 and 4,205.84 is: 6,309.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,067.68 : 21,103.68 = 4,205.84 : x
  2. Step 2: Convert to fraction form
    14,067.68/21,103.68 = 4,205.84/x
  3. Step 3: Cross multiply
    14,067.68x = 21,103.68 × 4,205.84
  4. Step 4: Simplify right side
    14,067.68x = 88,758,701.49
  5. Step 5: Solve for x
    x = 88,758,701.49/14,067.68
  6. Step 6: Final answer
    x = 6,309.41

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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.