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Finding the Fourth Proportional to 14,281.44, 21,413.94 and 5,515.20

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Solution

The fourth proportional to 14,281.44, 21,413.94 and 5,515.20 is: 8,269.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,281.44 : 21,413.94 = 5,515.20 : x
  2. Step 2: Convert to fraction form
    14,281.44/21,413.94 = 5,515.20/x
  3. Step 3: Cross multiply
    14,281.44x = 21,413.94 × 5,515.20
  4. Step 4: Simplify right side
    14,281.44x = 118,102,161.89
  5. Step 5: Solve for x
    x = 118,102,161.89/14,281.44
  6. Step 6: Final answer
    x = 8,269.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.