Finding the Fourth Proportional to 18,581,419.80, 27,872,129.70 and 13,798,450.80
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Solution
The fourth proportional to 18,581,419.80, 27,872,129.70 and 13,798,450.80 is: 20,697,676.20
Step by Step Solution
- Step 1: Write the proportion equation
18,581,419.80 : 27,872,129.70 = 13,798,450.80 : x - Step 2: Convert to fraction form
18,581,419.80/27,872,129.70 = 13,798,450.80/x - Step 3: Cross multiply
18,581,419.80x = 27,872,129.70 × 13,798,450.80 - Step 4: Simplify right side
18,581,419.80x = 384,592,210,356,668.75 - Step 5: Solve for x
x = 384,592,210,356,668.75/18,581,419.80 - Step 6: Final answer
x = 20,697,676.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.