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Finding the Fourth Proportional to 30,269.72, 45,413.84 and 15,489.14

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Solution

The fourth proportional to 30,269.72, 45,413.84 and 15,489.14 is: 23,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,269.72 : 45,413.84 = 15,489.14 : x
  2. Step 2: Convert to fraction form
    30,269.72/45,413.84 = 15,489.14/x
  3. Step 3: Cross multiply
    30,269.72x = 45,413.84 × 15,489.14
  4. Step 4: Simplify right side
    30,269.72x = 703,421,325.70
  5. Step 5: Solve for x
    x = 703,421,325.70/30,269.72
  6. Step 6: Final answer
    x = 23,238.45

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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.