Finding the Fourth Proportional to 18,518,412.10, 27,777,621.18 and 7,729,827.60
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Solution
The fourth proportional to 18,518,412.10, 27,777,621.18 and 7,729,827.60 is: 11,594,742.66
Step by Step Solution
- Step 1: Write the proportion equation
18,518,412.10 : 27,777,621.18 = 7,729,827.60 : x - Step 2: Convert to fraction form
18,518,412.10/27,777,621.18 = 7,729,827.60/x - Step 3: Cross multiply
18,518,412.10x = 27,777,621.18 × 7,729,827.60 - Step 4: Simplify right side
18,518,412.10x = 214,716,222,859,508.56 - Step 5: Solve for x
x = 214,716,222,859,508.56/18,518,412.10 - Step 6: Final answer
x = 11,594,742.66
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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.