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Finding the Fourth Proportional to 12,626.76, 18,938.32 and 3,859.32

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Solution

The fourth proportional to 12,626.76, 18,938.32 and 3,859.32 is: 5,788.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,626.76 : 18,938.32 = 3,859.32 : x
  2. Step 2: Convert to fraction form
    12,626.76/18,938.32 = 3,859.32/x
  3. Step 3: Cross multiply
    12,626.76x = 18,938.32 × 3,859.32
  4. Step 4: Simplify right side
    12,626.76x = 73,088,923.15
  5. Step 5: Solve for x
    x = 73,088,923.15/12,626.76
  6. Step 6: Final answer
    x = 5,788.42

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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.