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Finding the Fourth Proportional to 12,992.62, 19,515.30 and 11,467.12

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Solution

The fourth proportional to 12,992.62, 19,515.30 and 11,467.12 is: 17,223.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,992.62 : 19,515.30 = 11,467.12 : x
  2. Step 2: Convert to fraction form
    12,992.62/19,515.30 = 11,467.12/x
  3. Step 3: Cross multiply
    12,992.62x = 19,515.30 × 11,467.12
  4. Step 4: Simplify right side
    12,992.62x = 223,784,286.94
  5. Step 5: Solve for x
    x = 223,784,286.94/12,992.62
  6. Step 6: Final answer
    x = 17,223.95

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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.