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Finding the Fourth Proportional to 19,755.84, 27,269.92 and 11,375.68

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Solution

The fourth proportional to 19,755.84, 27,269.92 and 11,375.68 is: 15,702.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,755.84 : 27,269.92 = 11,375.68 : x
  2. Step 2: Convert to fraction form
    19,755.84/27,269.92 = 11,375.68/x
  3. Step 3: Cross multiply
    19,755.84x = 27,269.92 × 11,375.68
  4. Step 4: Simplify right side
    19,755.84x = 310,213,883.55
  5. Step 5: Solve for x
    x = 310,213,883.55/19,755.84
  6. Step 6: Final answer
    x = 15,702.39

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1.5x scale

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.