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Finding the Fourth Proportional to 19,997.70, 29,996.55 and 16,826.55

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Solution

The fourth proportional to 19,997.70, 29,996.55 and 16,826.55 is: 25,239.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,997.70 : 29,996.55 = 16,826.55 : x
  2. Step 2: Convert to fraction form
    19,997.70/29,996.55 = 16,826.55/x
  3. Step 3: Cross multiply
    19,997.70x = 29,996.55 × 16,826.55
  4. Step 4: Simplify right side
    19,997.70x = 504,738,448.40
  5. Step 5: Solve for x
    x = 504,738,448.40/19,997.70
  6. Step 6: Final answer
    x = 25,239.83

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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.