Finding the Fourth Proportional to 21,629,900.21, 29,847,370.85 and 12,807,768.81
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Solution
The fourth proportional to 21,629,900.21, 29,847,370.85 and 12,807,768.81 is: 17,673,600.97
Step by Step Solution
- Step 1: Write the proportion equation
21,629,900.21 : 29,847,370.85 = 12,807,768.81 : x - Step 2: Convert to fraction form
21,629,900.21/29,847,370.85 = 12,807,768.81/x - Step 3: Cross multiply
21,629,900.21x = 29,847,370.85 × 12,807,768.81 - Step 4: Simplify right side
21,629,900.21x = 382,278,225,465,152.62 - Step 5: Solve for x
x = 382,278,225,465,152.62/21,629,900.21 - Step 6: Final answer
x = 17,673,600.97
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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.