Home / 21,630.34-29,850.90-12,198.70

Finding the Fourth Proportional to 21,630.34, 29,850.90 and 12,198.70

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Solution

The fourth proportional to 21,630.34, 29,850.90 and 12,198.70 is: 16,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.34 : 29,850.90 = 12,198.70 : x
  2. Step 2: Convert to fraction form
    21,630.34/29,850.90 = 12,198.70/x
  3. Step 3: Cross multiply
    21,630.34x = 29,850.90 × 12,198.70
  4. Step 4: Simplify right side
    21,630.34x = 364,142,173.83
  5. Step 5: Solve for x
    x = 364,142,173.83/21,630.34
  6. Step 6: Final answer
    x = 16,834.79

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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.