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Finding the Fourth Proportional to 20,861.69, 31,292.22 and 5,066.84

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Solution

The fourth proportional to 20,861.69, 31,292.22 and 5,066.84 is: 7,600.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.69 : 31,292.22 = 5,066.84 : x
  2. Step 2: Convert to fraction form
    20,861.69/31,292.22 = 5,066.84/x
  3. Step 3: Cross multiply
    20,861.69x = 31,292.22 × 5,066.84
  4. Step 4: Simplify right side
    20,861.69x = 158,552,593.20
  5. Step 5: Solve for x
    x = 158,552,593.20/20,861.69
  6. Step 6: Final answer
    x = 7,600.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.