Finding the Fourth Proportional to 13,412,628.63, 18,511,843.08 and 7,905,682.03
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Solution
The fourth proportional to 13,412,628.63, 18,511,843.08 and 7,905,682.03 is: 10,911,264.99
Step by Step Solution
- Step 1: Write the proportion equation
13,412,628.63 : 18,511,843.08 = 7,905,682.03 : x - Step 2: Convert to fraction form
13,412,628.63/18,511,843.08 = 7,905,682.03/x - Step 3: Cross multiply
13,412,628.63x = 18,511,843.08 × 7,905,682.03 - Step 4: Simplify right side
13,412,628.63x = 146,348,745,179,735.84 - Step 5: Solve for x
x = 146,348,745,179,735.84/13,412,628.63 - Step 6: Final answer
x = 10,911,264.99
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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.