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Finding the Fourth Proportional to 20,600.98, 30,902.70 and 5,811.16

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Solution

The fourth proportional to 20,600.98, 30,902.70 and 5,811.16 is: 8,717.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.98 : 30,902.70 = 5,811.16 : x
  2. Step 2: Convert to fraction form
    20,600.98/30,902.70 = 5,811.16/x
  3. Step 3: Cross multiply
    20,600.98x = 30,902.70 × 5,811.16
  4. Step 4: Simplify right side
    20,600.98x = 179,580,534.13
  5. Step 5: Solve for x
    x = 179,580,534.13/20,600.98
  6. Step 6: Final answer
    x = 8,717.09

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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.