Finding the Fourth Proportional to 13,278,024.37, 18,325,419.78 and 7,477,939.99
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Solution
The fourth proportional to 13,278,024.37, 18,325,419.78 and 7,477,939.99 is: 10,320,540.59
Step by Step Solution
- Step 1: Write the proportion equation
13,278,024.37 : 18,325,419.78 = 7,477,939.99 : x - Step 2: Convert to fraction form
13,278,024.37/18,325,419.78 = 7,477,939.99/x - Step 3: Cross multiply
13,278,024.37x = 18,325,419.78 × 7,477,939.99 - Step 4: Simplify right side
13,278,024.37x = 137,036,389,406,399.02 - Step 5: Solve for x
x = 137,036,389,406,399.02/13,278,024.37 - Step 6: Final answer
x = 10,320,540.59
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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.