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Finding the Fourth Proportional to 26,728, 40,073.52 and 19,236.16

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Solution

The fourth proportional to 26,728, 40,073.52 and 19,236.16 is: 28,840.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,728 : 40,073.52 = 19,236.16 : x
  2. Step 2: Convert to fraction form
    26,728/40,073.52 = 19,236.16/x
  3. Step 3: Cross multiply
    26,728x = 40,073.52 × 19,236.16
  4. Step 4: Simplify right side
    26,728x = 770,860,642.48
  5. Step 5: Solve for x
    x = 770,860,642.48/26,728
  6. Step 6: Final answer
    x = 28,840.94

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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.