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Finding the Fourth Proportional to 20,804.22, 28,709.91 and 11,852.10

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Solution

The fourth proportional to 20,804.22, 28,709.91 and 11,852.10 is: 16,355.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.22 : 28,709.91 = 11,852.10 : x
  2. Step 2: Convert to fraction form
    20,804.22/28,709.91 = 11,852.10/x
  3. Step 3: Cross multiply
    20,804.22x = 28,709.91 × 11,852.10
  4. Step 4: Simplify right side
    20,804.22x = 340,272,724.31
  5. Step 5: Solve for x
    x = 340,272,724.31/20,804.22
  6. Step 6: Final answer
    x = 16,355.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.