Home / 19,183.12-28,816.64-13,671.88

Finding the Fourth Proportional to 19,183.12, 28,816.64 and 13,671.88

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Solution

The fourth proportional to 19,183.12, 28,816.64 and 13,671.88 is: 20,537.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,183.12 : 28,816.64 = 13,671.88 : x
  2. Step 2: Convert to fraction form
    19,183.12/28,816.64 = 13,671.88/x
  3. Step 3: Cross multiply
    19,183.12x = 28,816.64 × 13,671.88
  4. Step 4: Simplify right side
    19,183.12x = 393,977,644.08
  5. Step 5: Solve for x
    x = 393,977,644.08/19,183.12
  6. Step 6: Final answer
    x = 20,537.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.