Finding the Fourth Proportional to 21,450,754.32, 29,611,583.28 and 12,751,743.12
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Solution
The fourth proportional to 21,450,754.32, 29,611,583.28 and 12,751,743.12 is: 17,603,078.09
Step by Step Solution
- Step 1: Write the proportion equation
21,450,754.32 : 29,611,583.28 = 12,751,743.12 : x - Step 2: Convert to fraction form
21,450,754.32/29,611,583.28 = 12,751,743.12/x - Step 3: Cross multiply
21,450,754.32x = 29,611,583.28 × 12,751,743.12 - Step 4: Simplify right side
21,450,754.32x = 377,599,303,363,047 - Step 5: Solve for x
x = 377,599,303,363,047/21,450,754.32 - Step 6: Final answer
x = 17,603,078.09
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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.