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Finding the Fourth Proportional to 21,989.46, 30,359.22 and 16,944.10

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Solution

The fourth proportional to 21,989.46, 30,359.22 and 16,944.10 is: 23,393.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989.46 : 30,359.22 = 16,944.10 : x
  2. Step 2: Convert to fraction form
    21,989.46/30,359.22 = 16,944.10/x
  3. Step 3: Cross multiply
    21,989.46x = 30,359.22 × 16,944.10
  4. Step 4: Simplify right side
    21,989.46x = 514,409,659.60
  5. Step 5: Solve for x
    x = 514,409,659.60/21,989.46
  6. Step 6: Final answer
    x = 23,393.46

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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.