Home / 15,382.44-21,227.27-9,720.27

Finding the Fourth Proportional to 15,382.44, 21,227.27 and 9,720.27

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Solution

The fourth proportional to 15,382.44, 21,227.27 and 9,720.27 is: 13,413.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.44 : 21,227.27 = 9,720.27 : x
  2. Step 2: Convert to fraction form
    15,382.44/21,227.27 = 9,720.27/x
  3. Step 3: Cross multiply
    15,382.44x = 21,227.27 × 9,720.27
  4. Step 4: Simplify right side
    15,382.44x = 206,334,747.16
  5. Step 5: Solve for x
    x = 206,334,747.16/15,382.44
  6. Step 6: Final answer
    x = 13,413.66

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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.