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Finding the Fourth Proportional to 36,921, 55,380.98 and 17,188.52

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Solution

The fourth proportional to 36,921, 55,380.98 and 17,188.52 is: 25,782.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,921 : 55,380.98 = 17,188.52 : x
  2. Step 2: Convert to fraction form
    36,921/55,380.98 = 17,188.52/x
  3. Step 3: Cross multiply
    36,921x = 55,380.98 × 17,188.52
  4. Step 4: Simplify right side
    36,921x = 951,917,082.35
  5. Step 5: Solve for x
    x = 951,917,082.35/36,921
  6. Step 6: Final answer
    x = 25,782.54

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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.