Finding the Fourth Proportional to 13,245,921.98, 18,275,262.36 and 7,735,321.68
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Solution
The fourth proportional to 13,245,921.98, 18,275,262.36 and 7,735,321.68 is: 10,672,343.79
Step by Step Solution
- Step 1: Write the proportion equation
13,245,921.98 : 18,275,262.36 = 7,735,321.68 : x - Step 2: Convert to fraction form
13,245,921.98/18,275,262.36 = 7,735,321.68/x - Step 3: Cross multiply
13,245,921.98x = 18,275,262.36 × 7,735,321.68 - Step 4: Simplify right side
13,245,921.98x = 141,365,033,140,995.97 - Step 5: Solve for x
x = 141,365,033,140,995.97/13,245,921.98 - Step 6: Final answer
x = 10,672,343.79
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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.