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Finding the Fourth Proportional to 20,496.88, 30,748 and 7,350.72

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Solution

The fourth proportional to 20,496.88, 30,748 and 7,350.72 is: 11,027.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.88 : 30,748 = 7,350.72 : x
  2. Step 2: Convert to fraction form
    20,496.88/30,748 = 7,350.72/x
  3. Step 3: Cross multiply
    20,496.88x = 30,748 × 7,350.72
  4. Step 4: Simplify right side
    20,496.88x = 226,019,938.56
  5. Step 5: Solve for x
    x = 226,019,938.56/20,496.88
  6. Step 6: Final answer
    x = 11,027.04

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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.