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Finding the Fourth Proportional to 20,354.44, 30,688.57 and 20,228.08

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Solution

The fourth proportional to 20,354.44, 30,688.57 and 20,228.08 is: 30,498.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.44 : 30,688.57 = 20,228.08 : x
  2. Step 2: Convert to fraction form
    20,354.44/30,688.57 = 20,228.08/x
  3. Step 3: Cross multiply
    20,354.44x = 30,688.57 × 20,228.08
  4. Step 4: Simplify right side
    20,354.44x = 620,770,849.05
  5. Step 5: Solve for x
    x = 620,770,849.05/20,354.44
  6. Step 6: Final answer
    x = 30,498.06

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.