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Finding the Fourth Proportional to 18,370.28, 25,349.28 and 10,413.20

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Solution

The fourth proportional to 18,370.28, 25,349.28 and 10,413.20 is: 14,369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370.28 : 25,349.28 = 10,413.20 : x
  2. Step 2: Convert to fraction form
    18,370.28/25,349.28 = 10,413.20/x
  3. Step 3: Cross multiply
    18,370.28x = 25,349.28 × 10,413.20
  4. Step 4: Simplify right side
    18,370.28x = 263,967,122.50
  5. Step 5: Solve for x
    x = 263,967,122.50/18,370.28
  6. Step 6: Final answer
    x = 14,369.25

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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.