Home / 31,979.76-47,972.94-12,274.80

Finding the Fourth Proportional to 31,979.76, 47,972.94 and 12,274.80

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Solution

The fourth proportional to 31,979.76, 47,972.94 and 12,274.80 is: 18,413.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.76 : 47,972.94 = 12,274.80 : x
  2. Step 2: Convert to fraction form
    31,979.76/47,972.94 = 12,274.80/x
  3. Step 3: Cross multiply
    31,979.76x = 47,972.94 × 12,274.80
  4. Step 4: Simplify right side
    31,979.76x = 588,858,243.91
  5. Step 5: Solve for x
    x = 588,858,243.91/31,979.76
  6. Step 6: Final answer
    x = 18,413.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.