Finding the Fourth Proportional to 18,606,690.40, 27,889,299.60 and 7,243,362.40
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Solution
The fourth proportional to 18,606,690.40, 27,889,299.60 and 7,243,362.40 is: 10,856,971.32
Step by Step Solution
- Step 1: Write the proportion equation
18,606,690.40 : 27,889,299.60 = 7,243,362.40 : x - Step 2: Convert to fraction form
18,606,690.40/27,889,299.60 = 7,243,362.40/x - Step 3: Cross multiply
18,606,690.40x = 27,889,299.60 × 7,243,362.40 - Step 4: Simplify right side
18,606,690.40x = 202,012,304,084,975.06 - Step 5: Solve for x
x = 202,012,304,084,975.06/18,606,690.40 - Step 6: Final answer
x = 10,856,971.32
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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.