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Finding the Fourth Proportional to 26,146.70, 36,111.82 and 20,249.70

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Solution

The fourth proportional to 26,146.70, 36,111.82 and 20,249.70 is: 27,967.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,146.70 : 36,111.82 = 20,249.70 : x
  2. Step 2: Convert to fraction form
    26,146.70/36,111.82 = 20,249.70/x
  3. Step 3: Cross multiply
    26,146.70x = 36,111.82 × 20,249.70
  4. Step 4: Simplify right side
    26,146.70x = 731,253,340.89
  5. Step 5: Solve for x
    x = 731,253,340.89/26,146.70
  6. Step 6: Final answer
    x = 27,967.33

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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.