Home / 20,538,413.72-28,344,912.36-11,371,056.56

Finding the Fourth Proportional to 20,538,413.72, 28,344,912.36 and 11,371,056.56

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Solution

The fourth proportional to 20,538,413.72, 28,344,912.36 and 11,371,056.56 is: 15,693,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538,413.72 : 28,344,912.36 = 11,371,056.56 : x
  2. Step 2: Convert to fraction form
    20,538,413.72/28,344,912.36 = 11,371,056.56/x
  3. Step 3: Cross multiply
    20,538,413.72x = 28,344,912.36 × 11,371,056.56
  4. Step 4: Simplify right side
    20,538,413.72x = 322,311,601,633,803.06
  5. Step 5: Solve for x
    x = 322,311,601,633,803.06/20,538,413.72
  6. Step 6: Final answer
    x = 15,693,110.77

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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.