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Finding the Fourth Proportional to 13,906.09, 20,849.88 and 8,973.03

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Solution

The fourth proportional to 13,906.09, 20,849.88 and 8,973.03 is: 13,453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.09 : 20,849.88 = 8,973.03 : x
  2. Step 2: Convert to fraction form
    13,906.09/20,849.88 = 8,973.03/x
  3. Step 3: Cross multiply
    13,906.09x = 20,849.88 × 8,973.03
  4. Step 4: Simplify right side
    13,906.09x = 187,086,710.57
  5. Step 5: Solve for x
    x = 187,086,710.57/13,906.09
  6. Step 6: Final answer
    x = 13,453.58

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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.