Finding the Fourth Proportional to 15,628,984.44, 21,556,138.19 and 13,691,882.00
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Solution
The fourth proportional to 15,628,984.44, 21,556,138.19 and 13,691,882.00 is: 18,884,406.82
Step by Step Solution
- Step 1: Write the proportion equation
15,628,984.44 : 21,556,138.19 = 13,691,882.00 : x - Step 2: Convert to fraction form
15,628,984.44/21,556,138.19 = 13,691,882.00/x - Step 3: Cross multiply
15,628,984.44x = 21,556,138.19 × 13,691,882.00 - Step 4: Simplify right side
15,628,984.44x = 295,144,100,296,933.44 - Step 5: Solve for x
x = 295,144,100,296,933.44/15,628,984.44 - Step 6: Final answer
x = 18,884,406.82
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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.