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Finding the Fourth Proportional to 16,791.68, 25,178.40 and 8,339.64

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Solution

The fourth proportional to 16,791.68, 25,178.40 and 8,339.64 is: 12,504.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,791.68 : 25,178.40 = 8,339.64 : x
  2. Step 2: Convert to fraction form
    16,791.68/25,178.40 = 8,339.64/x
  3. Step 3: Cross multiply
    16,791.68x = 25,178.40 × 8,339.64
  4. Step 4: Simplify right side
    16,791.68x = 209,978,725.52
  5. Step 5: Solve for x
    x = 209,978,725.52/16,791.68
  6. Step 6: Final answer
    x = 12,504.93

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1.5x scale

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.