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Finding the Fourth Proportional to 12,622.95, 17,413.83 and 8,148.15

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Solution

The fourth proportional to 12,622.95, 17,413.83 and 8,148.15 is: 11,240.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.95 : 17,413.83 = 8,148.15 : x
  2. Step 2: Convert to fraction form
    12,622.95/17,413.83 = 8,148.15/x
  3. Step 3: Cross multiply
    12,622.95x = 17,413.83 × 8,148.15
  4. Step 4: Simplify right side
    12,622.95x = 141,890,498.91
  5. Step 5: Solve for x
    x = 141,890,498.91/12,622.95
  6. Step 6: Final answer
    x = 11,240.68

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