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Finding the Fourth Proportional to 12,627.96, 18,942.18 and 4,309.88

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Solution

The fourth proportional to 12,627.96, 18,942.18 and 4,309.88 is: 6,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,627.96 : 18,942.18 = 4,309.88 : x
  2. Step 2: Convert to fraction form
    12,627.96/18,942.18 = 4,309.88/x
  3. Step 3: Cross multiply
    12,627.96x = 18,942.18 × 4,309.88
  4. Step 4: Simplify right side
    12,627.96x = 81,638,522.74
  5. Step 5: Solve for x
    x = 81,638,522.74/12,627.96
  6. Step 6: Final answer
    x = 6,464.90

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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.