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Finding the Fourth Proportional to 18,651.59, 27,977.46 and 7,558.49

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Solution

The fourth proportional to 18,651.59, 27,977.46 and 7,558.49 is: 11,337.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.59 : 27,977.46 = 7,558.49 : x
  2. Step 2: Convert to fraction form
    18,651.59/27,977.46 = 7,558.49/x
  3. Step 3: Cross multiply
    18,651.59x = 27,977.46 × 7,558.49
  4. Step 4: Simplify right side
    18,651.59x = 211,467,351.64
  5. Step 5: Solve for x
    x = 211,467,351.64/18,651.59
  6. Step 6: Final answer
    x = 11,337.77

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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.