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Finding the Fourth Proportional to 12,636.10, 18,954.09 and 3,402.10

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Solution

The fourth proportional to 12,636.10, 18,954.09 and 3,402.10 is: 5,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.10 : 18,954.09 = 3,402.10 : x
  2. Step 2: Convert to fraction form
    12,636.10/18,954.09 = 3,402.10/x
  3. Step 3: Cross multiply
    12,636.10x = 18,954.09 × 3,402.10
  4. Step 4: Simplify right side
    12,636.10x = 64,483,709.59
  5. Step 5: Solve for x
    x = 64,483,709.59/12,636.10
  6. Step 6: Final answer
    x = 5,103.13

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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.