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Finding the Fourth Proportional to 19,997.20, 29,938.20 and 17,923.60

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Solution

The fourth proportional to 19,997.20, 29,938.20 and 17,923.60 is: 26,833.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,997.20 : 29,938.20 = 17,923.60 : x
  2. Step 2: Convert to fraction form
    19,997.20/29,938.20 = 17,923.60/x
  3. Step 3: Cross multiply
    19,997.20x = 29,938.20 × 17,923.60
  4. Step 4: Simplify right side
    19,997.20x = 536,600,321.52
  5. Step 5: Solve for x
    x = 536,600,321.52/19,997.20
  6. Step 6: Final answer
    x = 26,833.77

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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.