Finding the Fourth Proportional to 10,361,409.20, 15,514,120.20 and 8,121,921.20
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Solution
The fourth proportional to 10,361,409.20, 15,514,120.20 and 8,121,921.20 is: 12,160,938.66
Step by Step Solution
- Step 1: Write the proportion equation
10,361,409.20 : 15,514,120.20 = 8,121,921.20 : x - Step 2: Convert to fraction form
10,361,409.20/15,514,120.20 = 8,121,921.20/x - Step 3: Cross multiply
10,361,409.20x = 15,514,120.20 × 8,121,921.20 - Step 4: Simplify right side
10,361,409.20x = 126,004,461,751,728.23 - Step 5: Solve for x
x = 126,004,461,751,728.23/10,361,409.20 - Step 6: Final answer
x = 12,160,938.66
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1.5x scale
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.