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Finding the Fourth Proportional to 20,573.87, 30,873.13 and 18,900.82

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Solution

The fourth proportional to 20,573.87, 30,873.13 and 18,900.82 is: 28,362.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.87 : 30,873.13 = 18,900.82 : x
  2. Step 2: Convert to fraction form
    20,573.87/30,873.13 = 18,900.82/x
  3. Step 3: Cross multiply
    20,573.87x = 30,873.13 × 18,900.82
  4. Step 4: Simplify right side
    20,573.87x = 583,527,348.53
  5. Step 5: Solve for x
    x = 583,527,348.53/20,573.87
  6. Step 6: Final answer
    x = 28,362.54

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1.5x scale

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.