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Finding the Fourth Proportional to 20,652.52, 30,947.24 and 15,361.94

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Solution

The fourth proportional to 20,652.52, 30,947.24 and 15,361.94 is: 23,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.52 : 30,947.24 = 15,361.94 : x
  2. Step 2: Convert to fraction form
    20,652.52/30,947.24 = 15,361.94/x
  3. Step 3: Cross multiply
    20,652.52x = 30,947.24 × 15,361.94
  4. Step 4: Simplify right side
    20,652.52x = 475,409,644.05
  5. Step 5: Solve for x
    x = 475,409,644.05/20,652.52
  6. Step 6: Final answer
    x = 23,019.45

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Why These Related Problems?

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