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Finding the Fourth Proportional to 26,806.83, 40,301.37 and 21,912

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Solution

The fourth proportional to 26,806.83, 40,301.37 and 21,912 is: 32,942.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,806.83 : 40,301.37 = 21,912 : x
  2. Step 2: Convert to fraction form
    26,806.83/40,301.37 = 21,912/x
  3. Step 3: Cross multiply
    26,806.83x = 40,301.37 × 21,912
  4. Step 4: Simplify right side
    26,806.83x = 883,083,619.44
  5. Step 5: Solve for x
    x = 883,083,619.44/26,806.83
  6. Step 6: Final answer
    x = 32,942.49

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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.