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Finding the Fourth Proportional to 18,504.10, 27,756.08 and 8,637.90

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Solution

The fourth proportional to 18,504.10, 27,756.08 and 8,637.90 is: 12,956.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,504.10 : 27,756.08 = 8,637.90 : x
  2. Step 2: Convert to fraction form
    18,504.10/27,756.08 = 8,637.90/x
  3. Step 3: Cross multiply
    18,504.10x = 27,756.08 × 8,637.90
  4. Step 4: Simplify right side
    18,504.10x = 239,754,243.43
  5. Step 5: Solve for x
    x = 239,754,243.43/18,504.10
  6. Step 6: Final answer
    x = 12,956.82

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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.