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Finding the Fourth Proportional to 18,413.96, 25,410.39 and 10,455.14

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Solution

The fourth proportional to 18,413.96, 25,410.39 and 10,455.14 is: 14,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.96 : 25,410.39 = 10,455.14 : x
  2. Step 2: Convert to fraction form
    18,413.96/25,410.39 = 10,455.14/x
  3. Step 3: Cross multiply
    18,413.96x = 25,410.39 × 10,455.14
  4. Step 4: Simplify right side
    18,413.96x = 265,669,184.90
  5. Step 5: Solve for x
    x = 265,669,184.90/18,413.96
  6. Step 6: Final answer
    x = 14,427.60

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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.