Home / 15,517.14-21,413.73-8,443.54

Finding the Fourth Proportional to 15,517.14, 21,413.73 and 8,443.54

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Solution

The fourth proportional to 15,517.14, 21,413.73 and 8,443.54 is: 11,652.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.14 : 21,413.73 = 8,443.54 : x
  2. Step 2: Convert to fraction form
    15,517.14/21,413.73 = 8,443.54/x
  3. Step 3: Cross multiply
    15,517.14x = 21,413.73 × 8,443.54
  4. Step 4: Simplify right side
    15,517.14x = 180,807,685.80
  5. Step 5: Solve for x
    x = 180,807,685.80/15,517.14
  6. Step 6: Final answer
    x = 11,652.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.