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Finding the Fourth Proportional to 26,661.44, 39,990.51 and 7,941.53

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Solution

The fourth proportional to 26,661.44, 39,990.51 and 7,941.53 is: 11,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,661.44 : 39,990.51 = 7,941.53 : x
  2. Step 2: Convert to fraction form
    26,661.44/39,990.51 = 7,941.53/x
  3. Step 3: Cross multiply
    26,661.44x = 39,990.51 × 7,941.53
  4. Step 4: Simplify right side
    26,661.44x = 317,585,634.93
  5. Step 5: Solve for x
    x = 317,585,634.93/26,661.44
  6. Step 6: Final answer
    x = 11,911.80

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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.