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Finding the Fourth Proportional to 10,812.28, 16,220.28 and 3,416.59

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Solution

The fourth proportional to 10,812.28, 16,220.28 and 3,416.59 is: 5,125.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.28 : 16,220.28 = 3,416.59 : x
  2. Step 2: Convert to fraction form
    10,812.28/16,220.28 = 3,416.59/x
  3. Step 3: Cross multiply
    10,812.28x = 16,220.28 × 3,416.59
  4. Step 4: Simplify right side
    10,812.28x = 55,418,046.45
  5. Step 5: Solve for x
    x = 55,418,046.45/10,812.28
  6. Step 6: Final answer
    x = 5,125.47

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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.