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Finding the Fourth Proportional to 12,467.52, 18,717.61 and 8,771.48

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Solution

The fourth proportional to 12,467.52, 18,717.61 and 8,771.48 is: 13,168.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,467.52 : 18,717.61 = 8,771.48 : x
  2. Step 2: Convert to fraction form
    12,467.52/18,717.61 = 8,771.48/x
  3. Step 3: Cross multiply
    12,467.52x = 18,717.61 × 8,771.48
  4. Step 4: Simplify right side
    12,467.52x = 164,181,141.76
  5. Step 5: Solve for x
    x = 164,181,141.76/12,467.52
  6. Step 6: Final answer
    x = 13,168.71

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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.