Finding the Fourth Proportional to 12,776,913.66, 17,629,446.24 and 8,129,020.26
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Solution
The fourth proportional to 12,776,913.66, 17,629,446.24 and 8,129,020.26 is: 11,216,333.57
Step by Step Solution
- Step 1: Write the proportion equation
12,776,913.66 : 17,629,446.24 = 8,129,020.26 : x - Step 2: Convert to fraction form
12,776,913.66/17,629,446.24 = 8,129,020.26/x - Step 3: Cross multiply
12,776,913.66x = 17,629,446.24 × 8,129,020.26 - Step 4: Simplify right side
12,776,913.66x = 143,310,125,657,540.81 - Step 5: Solve for x
x = 143,310,125,657,540.81/12,776,913.66 - Step 6: Final answer
x = 11,216,333.57
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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.