Home / 16,939.80-25,425.90-8,629.20

Finding the Fourth Proportional to 16,939.80, 25,425.90 and 8,629.20

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Solution

The fourth proportional to 16,939.80, 25,425.90 and 8,629.20 is: 12,952.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,939.80 : 25,425.90 = 8,629.20 : x
  2. Step 2: Convert to fraction form
    16,939.80/25,425.90 = 8,629.20/x
  3. Step 3: Cross multiply
    16,939.80x = 25,425.90 × 8,629.20
  4. Step 4: Simplify right side
    16,939.80x = 219,405,176.28
  5. Step 5: Solve for x
    x = 219,405,176.28/16,939.80
  6. Step 6: Final answer
    x = 12,952.05

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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.