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Finding the Fourth Proportional to 21,791.46, 32,694.09 and 8,636.25

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Solution

The fourth proportional to 21,791.46, 32,694.09 and 8,636.25 is: 12,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,791.46 : 32,694.09 = 8,636.25 : x
  2. Step 2: Convert to fraction form
    21,791.46/32,694.09 = 8,636.25/x
  3. Step 3: Cross multiply
    21,791.46x = 32,694.09 × 8,636.25
  4. Step 4: Simplify right side
    21,791.46x = 282,354,334.76
  5. Step 5: Solve for x
    x = 282,354,334.76/21,791.46
  6. Step 6: Final answer
    x = 12,957.11

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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.