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Finding the Fourth Proportional to 18,488.53, 27,758.62 and 9,488.94

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Solution

The fourth proportional to 18,488.53, 27,758.62 and 9,488.94 is: 14,246.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.53 : 27,758.62 = 9,488.94 : x
  2. Step 2: Convert to fraction form
    18,488.53/27,758.62 = 9,488.94/x
  3. Step 3: Cross multiply
    18,488.53x = 27,758.62 × 9,488.94
  4. Step 4: Simplify right side
    18,488.53x = 263,399,879.66
  5. Step 5: Solve for x
    x = 263,399,879.66/18,488.53
  6. Step 6: Final answer
    x = 14,246.66

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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.