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Finding the Fourth Proportional to 13,604.97, 18,773.04 and 7,636.57

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Solution

The fourth proportional to 13,604.97, 18,773.04 and 7,636.57 is: 10,537.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.97 : 18,773.04 = 7,636.57 : x
  2. Step 2: Convert to fraction form
    13,604.97/18,773.04 = 7,636.57/x
  3. Step 3: Cross multiply
    13,604.97x = 18,773.04 × 7,636.57
  4. Step 4: Simplify right side
    13,604.97x = 143,361,634.07
  5. Step 5: Solve for x
    x = 143,361,634.07/13,604.97
  6. Step 6: Final answer
    x = 10,537.45

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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.