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Finding the Fourth Proportional to 12,615.98, 18,923.81 and 3,850.92

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Solution

The fourth proportional to 12,615.98, 18,923.81 and 3,850.92 is: 5,776.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.98 : 18,923.81 = 3,850.92 : x
  2. Step 2: Convert to fraction form
    12,615.98/18,923.81 = 3,850.92/x
  3. Step 3: Cross multiply
    12,615.98x = 18,923.81 × 3,850.92
  4. Step 4: Simplify right side
    12,615.98x = 72,874,059.15
  5. Step 5: Solve for x
    x = 72,874,059.15/12,615.98
  6. Step 6: Final answer
    x = 5,776.33

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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.