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Finding the Fourth Proportional to 14,046.73, 21,069.95 and 8,119.85

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Solution

The fourth proportional to 14,046.73, 21,069.95 and 8,119.85 is: 12,179.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,046.73 : 21,069.95 = 8,119.85 : x
  2. Step 2: Convert to fraction form
    14,046.73/21,069.95 = 8,119.85/x
  3. Step 3: Cross multiply
    14,046.73x = 21,069.95 × 8,119.85
  4. Step 4: Simplify right side
    14,046.73x = 171,084,822.94
  5. Step 5: Solve for x
    x = 171,084,822.94/14,046.73
  6. Step 6: Final answer
    x = 12,179.69

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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.