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Finding the Fourth Proportional to 25,169.70, 34,734.60 and 13,839.70

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Solution

The fourth proportional to 25,169.70, 34,734.60 and 13,839.70 is: 19,099.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,169.70 : 34,734.60 = 13,839.70 : x
  2. Step 2: Convert to fraction form
    25,169.70/34,734.60 = 13,839.70/x
  3. Step 3: Cross multiply
    25,169.70x = 34,734.60 × 13,839.70
  4. Step 4: Simplify right side
    25,169.70x = 480,716,443.62
  5. Step 5: Solve for x
    x = 480,716,443.62/25,169.70
  6. Step 6: Final answer
    x = 19,099.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.