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Finding the Fourth Proportional to 30,422.48, 41,983.72 and 16,993.68

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Solution

The fourth proportional to 30,422.48, 41,983.72 and 16,993.68 is: 23,451.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,422.48 : 41,983.72 = 16,993.68 : x
  2. Step 2: Convert to fraction form
    30,422.48/41,983.72 = 16,993.68/x
  3. Step 3: Cross multiply
    30,422.48x = 41,983.72 × 16,993.68
  4. Step 4: Simplify right side
    30,422.48x = 713,457,902.89
  5. Step 5: Solve for x
    x = 713,457,902.89/30,422.48
  6. Step 6: Final answer
    x = 23,451.67

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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.