Finding the Fourth Proportional to 20,571,474.21, 30,858,890.50 and 10,331,067.44
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Solution
The fourth proportional to 20,571,474.21, 30,858,890.50 and 10,331,067.44 is: 15,497,444.45
Step by Step Solution
- Step 1: Write the proportion equation
20,571,474.21 : 30,858,890.50 = 10,331,067.44 : x - Step 2: Convert to fraction form
20,571,474.21/30,858,890.50 = 10,331,067.44/x - Step 3: Cross multiply
20,571,474.21x = 30,858,890.50 × 10,331,067.44 - Step 4: Simplify right side
20,571,474.21x = 318,805,278,724,780.88 - Step 5: Solve for x
x = 318,805,278,724,780.88/20,571,474.21 - Step 6: Final answer
x = 15,497,444.45
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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.