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Finding the Fourth Proportional to 19,679.36, 27,274.72 and 19,310.72

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Solution

The fourth proportional to 19,679.36, 27,274.72 and 19,310.72 is: 26,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.36 : 27,274.72 = 19,310.72 : x
  2. Step 2: Convert to fraction form
    19,679.36/27,274.72 = 19,310.72/x
  3. Step 3: Cross multiply
    19,679.36x = 27,274.72 × 19,310.72
  4. Step 4: Simplify right side
    19,679.36x = 526,694,481.00
  5. Step 5: Solve for x
    x = 526,694,481.00/19,679.36
  6. Step 6: Final answer
    x = 26,763.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.