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Finding the Fourth Proportional to 13,634.31, 20,451.47 and 4,400.31

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Solution

The fourth proportional to 13,634.31, 20,451.47 and 4,400.31 is: 6,600.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.31 : 20,451.47 = 4,400.31 : x
  2. Step 2: Convert to fraction form
    13,634.31/20,451.47 = 4,400.31/x
  3. Step 3: Cross multiply
    13,634.31x = 20,451.47 × 4,400.31
  4. Step 4: Simplify right side
    13,634.31x = 89,992,807.96
  5. Step 5: Solve for x
    x = 89,992,807.96/13,634.31
  6. Step 6: Final answer
    x = 6,600.47

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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.