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Finding the Fourth Proportional to 20,660.95, 30,995.78 and 10,797.58

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Solution

The fourth proportional to 20,660.95, 30,995.78 and 10,797.58 is: 16,198.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.95 : 30,995.78 = 10,797.58 : x
  2. Step 2: Convert to fraction form
    20,660.95/30,995.78 = 10,797.58/x
  3. Step 3: Cross multiply
    20,660.95x = 30,995.78 × 10,797.58
  4. Step 4: Simplify right side
    20,660.95x = 334,679,414.21
  5. Step 5: Solve for x
    x = 334,679,414.21/20,660.95
  6. Step 6: Final answer
    x = 16,198.65

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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.