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Finding the Fourth Proportional to 18,373,609.10, 27,560,413.65 and 12,893,861.90

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Solution

The fourth proportional to 18,373,609.10, 27,560,413.65 and 12,893,861.90 is: 19,340,792.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373,609.10 : 27,560,413.65 = 12,893,861.90 : x
  2. Step 2: Convert to fraction form
    18,373,609.10/27,560,413.65 = 12,893,861.90/x
  3. Step 3: Cross multiply
    18,373,609.10x = 27,560,413.65 × 12,893,861.90
  4. Step 4: Simplify right side
    18,373,609.10x = 355,360,167,509,974.94
  5. Step 5: Solve for x
    x = 355,360,167,509,974.94/18,373,609.10
  6. Step 6: Final answer
    x = 19,340,792.85

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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.