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Finding the Fourth Proportional to 18,487.53, 27,757.12 and 9,487.94

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Solution

The fourth proportional to 18,487.53, 27,757.12 and 9,487.94 is: 14,245.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.53 : 27,757.12 = 9,487.94 : x
  2. Step 2: Convert to fraction form
    18,487.53/27,757.12 = 9,487.94/x
  3. Step 3: Cross multiply
    18,487.53x = 27,757.12 × 9,487.94
  4. Step 4: Simplify right side
    18,487.53x = 263,357,978.62
  5. Step 5: Solve for x
    x = 263,357,978.62/18,487.53
  6. Step 6: Final answer
    x = 14,245.17

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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.