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Finding the Fourth Proportional to 18,774.06, 28,137.67 and 16,428.49

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Solution

The fourth proportional to 18,774.06, 28,137.67 and 16,428.49 is: 24,622.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.06 : 28,137.67 = 16,428.49 : x
  2. Step 2: Convert to fraction form
    18,774.06/28,137.67 = 16,428.49/x
  3. Step 3: Cross multiply
    18,774.06x = 28,137.67 × 16,428.49
  4. Step 4: Simplify right side
    18,774.06x = 462,259,430.22
  5. Step 5: Solve for x
    x = 462,259,430.22/18,774.06
  6. Step 6: Final answer
    x = 24,622.24

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.