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Finding the Fourth Proportional to 18,644.91, 27,977.62 and 8,783.93

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Solution

The fourth proportional to 18,644.91, 27,977.62 and 8,783.93 is: 13,180.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.91 : 27,977.62 = 8,783.93 : x
  2. Step 2: Convert to fraction form
    18,644.91/27,977.62 = 8,783.93/x
  3. Step 3: Cross multiply
    18,644.91x = 27,977.62 × 8,783.93
  4. Step 4: Simplify right side
    18,644.91x = 245,753,503.63
  5. Step 5: Solve for x
    x = 245,753,503.63/18,644.91
  6. Step 6: Final answer
    x = 13,180.73

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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.