Finding the Fourth Proportional to 13,166,403.21, 18,170,342.69 and 7,364,838.96
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Solution
The fourth proportional to 13,166,403.21, 18,170,342.69 and 7,364,838.96 is: 10,163,872.82
Step by Step Solution
- Step 1: Write the proportion equation
13,166,403.21 : 18,170,342.69 = 7,364,838.96 : x - Step 2: Convert to fraction form
13,166,403.21/18,170,342.69 = 7,364,838.96/x - Step 3: Cross multiply
13,166,403.21x = 18,170,342.69 × 7,364,838.96 - Step 4: Simplify right side
13,166,403.21x = 133,821,647,723,039 - Step 5: Solve for x
x = 133,821,647,723,039/13,166,403.21 - Step 6: Final answer
x = 10,163,872.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.