Finding the Fourth Proportional to 13,138,814.80, 18,131,504.58 and 7,258,450.66
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Solution
The fourth proportional to 13,138,814.80, 18,131,504.58 and 7,258,450.66 is: 10,016,628.85
Step by Step Solution
- Step 1: Write the proportion equation
13,138,814.80 : 18,131,504.58 = 7,258,450.66 : x - Step 2: Convert to fraction form
13,138,814.80/18,131,504.58 = 7,258,450.66/x - Step 3: Cross multiply
13,138,814.80x = 18,131,504.58 × 7,258,450.66 - Step 4: Simplify right side
13,138,814.80x = 131,606,631,385,494.02 - Step 5: Solve for x
x = 131,606,631,385,494.02/13,138,814.80 - Step 6: Final answer
x = 10,016,628.85
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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.