Finding the Fourth Proportional to 21,211,674.10, 29,271,286.36 and 12,965,543.21
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Solution
The fourth proportional to 21,211,674.10, 29,271,286.36 and 12,965,543.21 is: 17,891,946.03
Step by Step Solution
- Step 1: Write the proportion equation
21,211,674.10 : 29,271,286.36 = 12,965,543.21 : x - Step 2: Convert to fraction form
21,211,674.10/29,271,286.36 = 12,965,543.21/x - Step 3: Cross multiply
21,211,674.10x = 29,271,286.36 × 12,965,543.21 - Step 4: Simplify right side
21,211,674.10x = 379,518,128,112,863.62 - Step 5: Solve for x
x = 379,518,128,112,863.62/21,211,674.10 - Step 6: Final answer
x = 17,891,946.03
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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.