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Finding the Fourth Proportional to 12,636.21, 18,945.22 and 5,969.01

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Solution

The fourth proportional to 12,636.21, 18,945.22 and 5,969.01 is: 8,949.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.21 : 18,945.22 = 5,969.01 : x
  2. Step 2: Convert to fraction form
    12,636.21/18,945.22 = 5,969.01/x
  3. Step 3: Cross multiply
    12,636.21x = 18,945.22 × 5,969.01
  4. Step 4: Simplify right side
    12,636.21x = 113,084,207.63
  5. Step 5: Solve for x
    x = 113,084,207.63/12,636.21
  6. Step 6: Final answer
    x = 8,949.22

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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.