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Finding the Fourth Proportional to 28,954.22, 39,975.75 and 22,274.73

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Solution

The fourth proportional to 28,954.22, 39,975.75 and 22,274.73 is: 30,753.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954.22 : 39,975.75 = 22,274.73 : x
  2. Step 2: Convert to fraction form
    28,954.22/39,975.75 = 22,274.73/x
  3. Step 3: Cross multiply
    28,954.22x = 39,975.75 × 22,274.73
  4. Step 4: Simplify right side
    28,954.22x = 890,449,037.80
  5. Step 5: Solve for x
    x = 890,449,037.80/28,954.22
  6. Step 6: Final answer
    x = 30,753.69

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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.