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Finding the Fourth Proportional to 15,033.20, 20,728.12 and 12,046.64

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Solution

The fourth proportional to 15,033.20, 20,728.12 and 12,046.64 is: 16,610.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,033.20 : 20,728.12 = 12,046.64 : x
  2. Step 2: Convert to fraction form
    15,033.20/20,728.12 = 12,046.64/x
  3. Step 3: Cross multiply
    15,033.20x = 20,728.12 × 12,046.64
  4. Step 4: Simplify right side
    15,033.20x = 249,704,199.52
  5. Step 5: Solve for x
    x = 249,704,199.52/15,033.20
  6. Step 6: Final answer
    x = 16,610.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.