Home / 21,885.72-30,198.78-12,454.44

Finding the Fourth Proportional to 21,885.72, 30,198.78 and 12,454.44

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Solution

The fourth proportional to 21,885.72, 30,198.78 and 12,454.44 is: 17,185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.72 : 30,198.78 = 12,454.44 : x
  2. Step 2: Convert to fraction form
    21,885.72/30,198.78 = 12,454.44/x
  3. Step 3: Cross multiply
    21,885.72x = 30,198.78 × 12,454.44
  4. Step 4: Simplify right side
    21,885.72x = 376,108,893.58
  5. Step 5: Solve for x
    x = 376,108,893.58/21,885.72
  6. Step 6: Final answer
    x = 17,185.13

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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.