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Finding the Fourth Proportional to 12,476.35, 18,722.22 and 5,811.67

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Solution

The fourth proportional to 12,476.35, 18,722.22 and 5,811.67 is: 8,721.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476.35 : 18,722.22 = 5,811.67 : x
  2. Step 2: Convert to fraction form
    12,476.35/18,722.22 = 5,811.67/x
  3. Step 3: Cross multiply
    12,476.35x = 18,722.22 × 5,811.67
  4. Step 4: Simplify right side
    12,476.35x = 108,807,364.31
  5. Step 5: Solve for x
    x = 108,807,364.31/12,476.35
  6. Step 6: Final answer
    x = 8,721.09

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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.