Home / 18,786.64-28,135.24-10,872.48

Finding the Fourth Proportional to 18,786.64, 28,135.24 and 10,872.48

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Solution

The fourth proportional to 18,786.64, 28,135.24 and 10,872.48 is: 16,282.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.64 : 28,135.24 = 10,872.48 : x
  2. Step 2: Convert to fraction form
    18,786.64/28,135.24 = 10,872.48/x
  3. Step 3: Cross multiply
    18,786.64x = 28,135.24 × 10,872.48
  4. Step 4: Simplify right side
    18,786.64x = 305,899,779.83
  5. Step 5: Solve for x
    x = 305,899,779.83/18,786.64
  6. Step 6: Final answer
    x = 16,282.84

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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.