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Finding the Fourth Proportional to 18,008.81, 27,000.79 and 9,680.44

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Solution

The fourth proportional to 18,008.81, 27,000.79 and 9,680.44 is: 14,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.81 : 27,000.79 = 9,680.44 : x
  2. Step 2: Convert to fraction form
    18,008.81/27,000.79 = 9,680.44/x
  3. Step 3: Cross multiply
    18,008.81x = 27,000.79 × 9,680.44
  4. Step 4: Simplify right side
    18,008.81x = 261,379,464.98
  5. Step 5: Solve for x
    x = 261,379,464.98/18,008.81
  6. Step 6: Final answer
    x = 14,513.98

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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.