Finding the Fourth Proportional to 21,509,018.52, 29,668,884.30 and 12,800,689.08
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Solution
The fourth proportional to 21,509,018.52, 29,668,884.30 and 12,800,689.08 is: 17,656,880.20
Step by Step Solution
- Step 1: Write the proportion equation
21,509,018.52 : 29,668,884.30 = 12,800,689.08 : x - Step 2: Convert to fraction form
21,509,018.52/29,668,884.30 = 12,800,689.08/x - Step 3: Cross multiply
21,509,018.52x = 29,668,884.30 × 12,800,689.08 - Step 4: Simplify right side
21,509,018.52x = 379,782,163,274,793.44 - Step 5: Solve for x
x = 379,782,163,274,793.44/21,509,018.52 - Step 6: Final answer
x = 17,656,880.20
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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.