Home / 28,508.80-42,704.84-16,786.48

Finding the Fourth Proportional to 28,508.80, 42,704.84 and 16,786.48

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Solution

The fourth proportional to 28,508.80, 42,704.84 and 16,786.48 is: 25,145.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.80 : 42,704.84 = 16,786.48 : x
  2. Step 2: Convert to fraction form
    28,508.80/42,704.84 = 16,786.48/x
  3. Step 3: Cross multiply
    28,508.80x = 42,704.84 × 16,786.48
  4. Step 4: Simplify right side
    28,508.80x = 716,863,942.56
  5. Step 5: Solve for x
    x = 716,863,942.56/28,508.80
  6. Step 6: Final answer
    x = 25,145.36

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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.