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Finding the Fourth Proportional to 13,472.44, 20,211.90 and 4,238.44

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Solution

The fourth proportional to 13,472.44, 20,211.90 and 4,238.44 is: 6,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,472.44 : 20,211.90 = 4,238.44 : x
  2. Step 2: Convert to fraction form
    13,472.44/20,211.90 = 4,238.44/x
  3. Step 3: Cross multiply
    13,472.44x = 20,211.90 × 4,238.44
  4. Step 4: Simplify right side
    13,472.44x = 85,666,925.44
  5. Step 5: Solve for x
    x = 85,666,925.44/13,472.44
  6. Step 6: Final answer
    x = 6,358.68

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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.