Home / 21,044.91-31,413.32-18,553.86

Finding the Fourth Proportional to 21,044.91, 31,413.32 and 18,553.86

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Solution

The fourth proportional to 21,044.91, 31,413.32 and 18,553.86 is: 27,694.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,044.91 : 31,413.32 = 18,553.86 : x
  2. Step 2: Convert to fraction form
    21,044.91/31,413.32 = 18,553.86/x
  3. Step 3: Cross multiply
    21,044.91x = 31,413.32 × 18,553.86
  4. Step 4: Simplify right side
    21,044.91x = 582,838,318.22
  5. Step 5: Solve for x
    x = 582,838,318.22/21,044.91
  6. Step 6: Final answer
    x = 27,694.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.