Home / 20,890,351.14-28,828,788.93-13,054,413.57

Finding the Fourth Proportional to 20,890,351.14, 28,828,788.93 and 13,054,413.57

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Solution

The fourth proportional to 20,890,351.14, 28,828,788.93 and 13,054,413.57 is: 18,015,155.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890,351.14 : 28,828,788.93 = 13,054,413.57 : x
  2. Step 2: Convert to fraction form
    20,890,351.14/28,828,788.93 = 13,054,413.57/x
  3. Step 3: Cross multiply
    20,890,351.14x = 28,828,788.93 × 13,054,413.57
  4. Step 4: Simplify right side
    20,890,351.14x = 376,342,933,414,457.81
  5. Step 5: Solve for x
    x = 376,342,933,414,457.81/20,890,351.14
  6. Step 6: Final answer
    x = 18,015,155.94

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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.