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Finding the Fourth Proportional to 13,811.84, 20,711.34 and 4,450.12

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Solution

The fourth proportional to 13,811.84, 20,711.34 and 4,450.12 is: 6,673.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.84 : 20,711.34 = 4,450.12 : x
  2. Step 2: Convert to fraction form
    13,811.84/20,711.34 = 4,450.12/x
  3. Step 3: Cross multiply
    13,811.84x = 20,711.34 × 4,450.12
  4. Step 4: Simplify right side
    13,811.84x = 92,167,948.36
  5. Step 5: Solve for x
    x = 92,167,948.36/13,811.84
  6. Step 6: Final answer
    x = 6,673.11

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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.