Finding the Fourth Proportional to 18,428,861.80, 27,643,304.96 and 7,643,266.68
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Solution
The fourth proportional to 18,428,861.80, 27,643,304.96 and 7,643,266.68 is: 11,464,905.10
Step by Step Solution
- Step 1: Write the proportion equation
18,428,861.80 : 27,643,304.96 = 7,643,266.68 : x - Step 2: Convert to fraction form
18,428,861.80/27,643,304.96 = 7,643,266.68/x - Step 3: Cross multiply
18,428,861.80x = 27,643,304.96 × 7,643,266.68 - Step 4: Simplify right side
18,428,861.80x = 211,285,151,725,846.72 - Step 5: Solve for x
x = 211,285,151,725,846.72/18,428,861.80 - Step 6: Final answer
x = 11,464,905.10
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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.