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Finding the Fourth Proportional to 13,650.54, 20,448.72 and 10,519.68

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Solution

The fourth proportional to 13,650.54, 20,448.72 and 10,519.68 is: 15,758.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.54 : 20,448.72 = 10,519.68 : x
  2. Step 2: Convert to fraction form
    13,650.54/20,448.72 = 10,519.68/x
  3. Step 3: Cross multiply
    13,650.54x = 20,448.72 × 10,519.68
  4. Step 4: Simplify right side
    13,650.54x = 215,113,990.81
  5. Step 5: Solve for x
    x = 215,113,990.81/13,650.54
  6. Step 6: Final answer
    x = 15,758.64

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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.