Home / 19,996.20-29,951.10-12,997.80

Finding the Fourth Proportional to 19,996.20, 29,951.10 and 12,997.80

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Solution

The fourth proportional to 19,996.20, 29,951.10 and 12,997.80 is: 19,468.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,996.20 : 29,951.10 = 12,997.80 : x
  2. Step 2: Convert to fraction form
    19,996.20/29,951.10 = 12,997.80/x
  3. Step 3: Cross multiply
    19,996.20x = 29,951.10 × 12,997.80
  4. Step 4: Simplify right side
    19,996.20x = 389,298,407.58
  5. Step 5: Solve for x
    x = 389,298,407.58/19,996.20
  6. Step 6: Final answer
    x = 19,468.62

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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.