Finding the Fourth Proportional to 12,721,684.62, 17,555,911.21 and 6,920,452.68
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Solution
The fourth proportional to 12,721,684.62, 17,555,911.21 and 6,920,452.68 is: 9,550,217.32
Step by Step Solution
- Step 1: Write the proportion equation
12,721,684.62 : 17,555,911.21 = 6,920,452.68 : x - Step 2: Convert to fraction form
12,721,684.62/17,555,911.21 = 6,920,452.68/x - Step 3: Cross multiply
12,721,684.62x = 17,555,911.21 × 6,920,452.68 - Step 4: Simplify right side
12,721,684.62x = 121,494,852,783,086.55 - Step 5: Solve for x
x = 121,494,852,783,086.55/12,721,684.62 - Step 6: Final answer
x = 9,550,217.32
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1.5x scale
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.