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Finding the Fourth Proportional to 18,651.69, 27,977.60 and 7,558.58

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Solution

The fourth proportional to 18,651.69, 27,977.60 and 7,558.58 is: 11,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.69 : 27,977.60 = 7,558.58 : x
  2. Step 2: Convert to fraction form
    18,651.69/27,977.60 = 7,558.58/x
  3. Step 3: Cross multiply
    18,651.69x = 27,977.60 × 7,558.58
  4. Step 4: Simplify right side
    18,651.69x = 211,471,016.65
  5. Step 5: Solve for x
    x = 211,471,016.65/18,651.69
  6. Step 6: Final answer
    x = 11,337.90

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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.