Finding the Fourth Proportional to 20,996,882.75, 28,975,698.60 and 11,339,090.75
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Solution
The fourth proportional to 20,996,882.75, 28,975,698.60 and 11,339,090.75 is: 15,647,945.45
Step by Step Solution
- Step 1: Write the proportion equation
20,996,882.75 : 28,975,698.60 = 11,339,090.75 : x - Step 2: Convert to fraction form
20,996,882.75/28,975,698.60 = 11,339,090.75/x - Step 3: Cross multiply
20,996,882.75x = 28,975,698.60 × 11,339,090.75 - Step 4: Simplify right side
20,996,882.75x = 328,558,075,970,047.94 - Step 5: Solve for x
x = 328,558,075,970,047.94/20,996,882.75 - Step 6: Final answer
x = 15,647,945.45
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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.