Finding the Fourth Proportional to 18,389,915.10, 27,584,872.65 and 15,520,133.70
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Solution
The fourth proportional to 18,389,915.10, 27,584,872.65 and 15,520,133.70 is: 23,280,200.55
Step by Step Solution
- Step 1: Write the proportion equation
18,389,915.10 : 27,584,872.65 = 15,520,133.70 : x - Step 2: Convert to fraction form
18,389,915.10/27,584,872.65 = 15,520,133.70/x - Step 3: Cross multiply
18,389,915.10x = 27,584,872.65 × 15,520,133.70 - Step 4: Simplify right side
18,389,915.10x = 428,120,911,625,473.25 - Step 5: Solve for x
x = 428,120,911,625,473.25/18,389,915.10 - Step 6: Final answer
x = 23,280,200.55
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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.