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Finding the Fourth Proportional to 19,998.56, 29,997.84 and 6,147.56

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Solution

The fourth proportional to 19,998.56, 29,997.84 and 6,147.56 is: 9,221.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.56 : 29,997.84 = 6,147.56 : x
  2. Step 2: Convert to fraction form
    19,998.56/29,997.84 = 6,147.56/x
  3. Step 3: Cross multiply
    19,998.56x = 29,997.84 × 6,147.56
  4. Step 4: Simplify right side
    19,998.56x = 184,413,619.32
  5. Step 5: Solve for x
    x = 184,413,619.32/19,998.56
  6. Step 6: Final answer
    x = 9,221.34

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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.