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Finding the Fourth Proportional to 18,506.02, 27,759.30 and 8,644

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Solution

The fourth proportional to 18,506.02, 27,759.30 and 8,644 is: 12,966.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506.02 : 27,759.30 = 8,644 : x
  2. Step 2: Convert to fraction form
    18,506.02/27,759.30 = 8,644/x
  3. Step 3: Cross multiply
    18,506.02x = 27,759.30 × 8,644
  4. Step 4: Simplify right side
    18,506.02x = 239,951,389.20
  5. Step 5: Solve for x
    x = 239,951,389.20/18,506.02
  6. Step 6: Final answer
    x = 12,966.13

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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.