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Finding the Fourth Proportional to 27,153.73, 40,745.89 and 21,213.97

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Solution

The fourth proportional to 27,153.73, 40,745.89 and 21,213.97 is: 31,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,153.73 : 40,745.89 = 21,213.97 : x
  2. Step 2: Convert to fraction form
    27,153.73/40,745.89 = 21,213.97/x
  3. Step 3: Cross multiply
    27,153.73x = 40,745.89 × 21,213.97
  4. Step 4: Simplify right side
    27,153.73x = 864,382,012.74
  5. Step 5: Solve for x
    x = 864,382,012.74/27,153.73
  6. Step 6: Final answer
    x = 31,832.90

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1.5x scale

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.