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Finding the Fourth Proportional to 22,285.99, 30,754.90 and 12,214.21

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Solution

The fourth proportional to 22,285.99, 30,754.90 and 12,214.21 is: 16,855.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,285.99 : 30,754.90 = 12,214.21 : x
  2. Step 2: Convert to fraction form
    22,285.99/30,754.90 = 12,214.21/x
  3. Step 3: Cross multiply
    22,285.99x = 30,754.90 × 12,214.21
  4. Step 4: Simplify right side
    22,285.99x = 375,646,592.28
  5. Step 5: Solve for x
    x = 375,646,592.28/22,285.99
  6. Step 6: Final answer
    x = 16,855.73

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.