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Finding the Fourth Proportional to 18,665.83, 27,984.84 and 8,799.49

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Solution

The fourth proportional to 18,665.83, 27,984.84 and 8,799.49 is: 13,192.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.83 : 27,984.84 = 8,799.49 : x
  2. Step 2: Convert to fraction form
    18,665.83/27,984.84 = 8,799.49/x
  3. Step 3: Cross multiply
    18,665.83x = 27,984.84 × 8,799.49
  4. Step 4: Simplify right side
    18,665.83x = 246,252,319.73
  5. Step 5: Solve for x
    x = 246,252,319.73/18,665.83
  6. Step 6: Final answer
    x = 13,192.68

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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.