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Finding the Fourth Proportional to 12,674.95, 19,015.14 and 3,790.98

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Solution

The fourth proportional to 12,674.95, 19,015.14 and 3,790.98 is: 5,687.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.95 : 19,015.14 = 3,790.98 : x
  2. Step 2: Convert to fraction form
    12,674.95/19,015.14 = 3,790.98/x
  3. Step 3: Cross multiply
    12,674.95x = 19,015.14 × 3,790.98
  4. Step 4: Simplify right side
    12,674.95x = 72,086,015.44
  5. Step 5: Solve for x
    x = 72,086,015.44/12,674.95
  6. Step 6: Final answer
    x = 5,687.28

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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.