Home / 20,178,858.72-27,847,413.12-11,012,091.92

Finding the Fourth Proportional to 20,178,858.72, 27,847,413.12 and 11,012,091.92

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Solution

The fourth proportional to 20,178,858.72, 27,847,413.12 and 11,012,091.92 is: 15,197,007.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178,858.72 : 27,847,413.12 = 11,012,091.92 : x
  2. Step 2: Convert to fraction form
    20,178,858.72/27,847,413.12 = 11,012,091.92/x
  3. Step 3: Cross multiply
    20,178,858.72x = 27,847,413.12 × 11,012,091.92
  4. Step 4: Simplify right side
    20,178,858.72x = 306,658,273,011,654
  5. Step 5: Solve for x
    x = 306,658,273,011,654/20,178,858.72
  6. Step 6: Final answer
    x = 15,197,007.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.