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Finding the Fourth Proportional to 18,736.90, 28,097.11 and 9,969.73

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Solution

The fourth proportional to 18,736.90, 28,097.11 and 9,969.73 is: 14,950.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.90 : 28,097.11 = 9,969.73 : x
  2. Step 2: Convert to fraction form
    18,736.90/28,097.11 = 9,969.73/x
  3. Step 3: Cross multiply
    18,736.90x = 28,097.11 × 9,969.73
  4. Step 4: Simplify right side
    18,736.90x = 280,120,542.70
  5. Step 5: Solve for x
    x = 280,120,542.70/18,736.90
  6. Step 6: Final answer
    x = 14,950.21

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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.