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Finding the Fourth Proportional to 18,289.44, 27,413.45 and 8,408.32

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Solution

The fourth proportional to 18,289.44, 27,413.45 and 8,408.32 is: 12,602.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.44 : 27,413.45 = 8,408.32 : x
  2. Step 2: Convert to fraction form
    18,289.44/27,413.45 = 8,408.32/x
  3. Step 3: Cross multiply
    18,289.44x = 27,413.45 × 8,408.32
  4. Step 4: Simplify right side
    18,289.44x = 230,501,059.90
  5. Step 5: Solve for x
    x = 230,501,059.90/18,289.44
  6. Step 6: Final answer
    x = 12,602.96

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1.5x scale

Why These Related Problems?

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