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Finding the Fourth Proportional to 19,907.92, 29,868.67 and 12,503.71

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Solution

The fourth proportional to 19,907.92, 29,868.67 and 12,503.71 is: 18,759.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,907.92 : 29,868.67 = 12,503.71 : x
  2. Step 2: Convert to fraction form
    19,907.92/29,868.67 = 12,503.71/x
  3. Step 3: Cross multiply
    19,907.92x = 29,868.67 × 12,503.71
  4. Step 4: Simplify right side
    19,907.92x = 373,469,240.73
  5. Step 5: Solve for x
    x = 373,469,240.73/19,907.92
  6. Step 6: Final answer
    x = 18,759.83

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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.