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Finding the Fourth Proportional to 22,413.74, 30,924.01 and 12,721.61

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Solution

The fourth proportional to 22,413.74, 30,924.01 and 12,721.61 is: 17,551.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,413.74 : 30,924.01 = 12,721.61 : x
  2. Step 2: Convert to fraction form
    22,413.74/30,924.01 = 12,721.61/x
  3. Step 3: Cross multiply
    22,413.74x = 30,924.01 × 12,721.61
  4. Step 4: Simplify right side
    22,413.74x = 393,403,194.86
  5. Step 5: Solve for x
    x = 393,403,194.86/22,413.74
  6. Step 6: Final answer
    x = 17,551.88

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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.