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Finding the Fourth Proportional to 11,130, 15,359.64 and 6,413.52

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Solution

The fourth proportional to 11,130, 15,359.64 and 6,413.52 is: 8,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130 : 15,359.64 = 6,413.52 : x
  2. Step 2: Convert to fraction form
    11,130/15,359.64 = 6,413.52/x
  3. Step 3: Cross multiply
    11,130x = 15,359.64 × 6,413.52
  4. Step 4: Simplify right side
    11,130x = 98,509,358.33
  5. Step 5: Solve for x
    x = 98,509,358.33/11,130
  6. Step 6: Final answer
    x = 8,850.80

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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.