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Finding the Fourth Proportional to 55,728, 83,592 and 18,792

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Solution

The fourth proportional to 55,728, 83,592 and 18,792 is: 28,188

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,728 : 83,592 = 18,792 : x
  2. Step 2: Convert to fraction form
    55,728/83,592 = 18,792/x
  3. Step 3: Cross multiply
    55,728x = 83,592 × 18,792
  4. Step 4: Simplify right side
    55,728x = 1,570,860,864
  5. Step 5: Solve for x
    x = 1,570,860,864/55,728
  6. Step 6: Final answer
    x = 28,188

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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.