Finding the Fourth Proportional to 21,651,260.98, 29,878,729.81 and 12,949,433.42
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Solution
The fourth proportional to 21,651,260.98, 29,878,729.81 and 12,949,433.42 is: 17,870,211.93
Step by Step Solution
- Step 1: Write the proportion equation
21,651,260.98 : 29,878,729.81 = 12,949,433.42 : x - Step 2: Convert to fraction form
21,651,260.98/29,878,729.81 = 12,949,433.42/x - Step 3: Cross multiply
21,651,260.98x = 29,878,729.81 × 12,949,433.42 - Step 4: Simplify right side
21,651,260.98x = 386,912,622,348,764.25 - Step 5: Solve for x
x = 386,912,622,348,764.25/21,651,260.98 - Step 6: Final answer
x = 17,870,211.93
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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.