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Finding the Fourth Proportional to 12,636.75, 18,954.33 and 4,935.09

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Solution

The fourth proportional to 12,636.75, 18,954.33 and 4,935.09 is: 7,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.75 : 18,954.33 = 4,935.09 : x
  2. Step 2: Convert to fraction form
    12,636.75/18,954.33 = 4,935.09/x
  3. Step 3: Cross multiply
    12,636.75x = 18,954.33 × 4,935.09
  4. Step 4: Simplify right side
    12,636.75x = 93,541,359.49
  5. Step 5: Solve for x
    x = 93,541,359.49/12,636.75
  6. Step 6: Final answer
    x = 7,402.33

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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.