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Finding the Fourth Proportional to 28,903.70, 43,380.24 and 20,604.02

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Solution

The fourth proportional to 28,903.70, 43,380.24 and 20,604.02 is: 30,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.70 : 43,380.24 = 20,604.02 : x
  2. Step 2: Convert to fraction form
    28,903.70/43,380.24 = 20,604.02/x
  3. Step 3: Cross multiply
    28,903.70x = 43,380.24 × 20,604.02
  4. Step 4: Simplify right side
    28,903.70x = 893,807,332.56
  5. Step 5: Solve for x
    x = 893,807,332.56/28,903.70
  6. Step 6: Final answer
    x = 30,923.63

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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.