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Finding the Fourth Proportional to 17,274.60, 25,912.32 and 12,919.71

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Solution

The fourth proportional to 17,274.60, 25,912.32 and 12,919.71 is: 19,379.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,274.60 : 25,912.32 = 12,919.71 : x
  2. Step 2: Convert to fraction form
    17,274.60/25,912.32 = 12,919.71/x
  3. Step 3: Cross multiply
    17,274.60x = 25,912.32 × 12,919.71
  4. Step 4: Simplify right side
    17,274.60x = 334,779,659.83
  5. Step 5: Solve for x
    x = 334,779,659.83/17,274.60
  6. Step 6: Final answer
    x = 19,379.88

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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.