Home / 27,988-38,623.44-15,413.56

Finding the Fourth Proportional to 27,988, 38,623.44 and 15,413.56

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Solution

The fourth proportional to 27,988, 38,623.44 and 15,413.56 is: 21,270.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988 : 38,623.44 = 15,413.56 : x
  2. Step 2: Convert to fraction form
    27,988/38,623.44 = 15,413.56/x
  3. Step 3: Cross multiply
    27,988x = 38,623.44 × 15,413.56
  4. Step 4: Simplify right side
    27,988x = 595,324,709.85
  5. Step 5: Solve for x
    x = 595,324,709.85/27,988
  6. Step 6: Final answer
    x = 21,270.71

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Double scale
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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.