Finding the Fourth Proportional to 13,520,703.05, 18,659,485.66 and 7,638,297.03
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Solution
The fourth proportional to 13,520,703.05, 18,659,485.66 and 7,638,297.03 is: 10,541,367.07
Step by Step Solution
- Step 1: Write the proportion equation
13,520,703.05 : 18,659,485.66 = 7,638,297.03 : x - Step 2: Convert to fraction form
13,520,703.05/18,659,485.66 = 7,638,297.03/x - Step 3: Cross multiply
13,520,703.05x = 18,659,485.66 × 7,638,297.03 - Step 4: Simplify right side
13,520,703.05x = 142,526,693,906,562.81 - Step 5: Solve for x
x = 142,526,693,906,562.81/13,520,703.05 - Step 6: Final answer
x = 10,541,367.07
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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.