Home / 13,413.94-18,511.36-8,112.30

Finding the Fourth Proportional to 13,413.94, 18,511.36 and 8,112.30

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Solution

The fourth proportional to 13,413.94, 18,511.36 and 8,112.30 is: 11,195.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.94 : 18,511.36 = 8,112.30 : x
  2. Step 2: Convert to fraction form
    13,413.94/18,511.36 = 8,112.30/x
  3. Step 3: Cross multiply
    13,413.94x = 18,511.36 × 8,112.30
  4. Step 4: Simplify right side
    13,413.94x = 150,169,705.73
  5. Step 5: Solve for x
    x = 150,169,705.73/13,413.94
  6. Step 6: Final answer
    x = 11,195.05

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1.5x scale

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.