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Finding the Fourth Proportional to 26,755.82, 36,919.09 and 15,424.42

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Solution

The fourth proportional to 26,755.82, 36,919.09 and 15,424.42 is: 21,283.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,755.82 : 36,919.09 = 15,424.42 : x
  2. Step 2: Convert to fraction form
    26,755.82/36,919.09 = 15,424.42/x
  3. Step 3: Cross multiply
    26,755.82x = 36,919.09 × 15,424.42
  4. Step 4: Simplify right side
    26,755.82x = 569,455,550.18
  5. Step 5: Solve for x
    x = 569,455,550.18/26,755.82
  6. Step 6: Final answer
    x = 21,283.43

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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.