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Finding the Fourth Proportional to 21,633.98, 29,854.58 and 12,205.58

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Solution

The fourth proportional to 21,633.98, 29,854.58 and 12,205.58 is: 16,843.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,633.98 : 29,854.58 = 12,205.58 : x
  2. Step 2: Convert to fraction form
    21,633.98/29,854.58 = 12,205.58/x
  3. Step 3: Cross multiply
    21,633.98x = 29,854.58 × 12,205.58
  4. Step 4: Simplify right side
    21,633.98x = 364,392,464.56
  5. Step 5: Solve for x
    x = 364,392,464.56/21,633.98
  6. Step 6: Final answer
    x = 16,843.52

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1.5x scale

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.