Finding the Fourth Proportional to 20,286,319.23, 27,995,797.57 and 11,118,985.47
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Solution
The fourth proportional to 20,286,319.23, 27,995,797.57 and 11,118,985.47 is: 15,344,571.03
Step by Step Solution
- Step 1: Write the proportion equation
20,286,319.23 : 27,995,797.57 = 11,118,985.47 : x - Step 2: Convert to fraction form
20,286,319.23/27,995,797.57 = 11,118,985.47/x - Step 3: Cross multiply
20,286,319.23x = 27,995,797.57 × 11,118,985.47 - Step 4: Simplify right side
20,286,319.23x = 311,284,866,499,678.31 - Step 5: Solve for x
x = 311,284,866,499,678.31/20,286,319.23 - Step 6: Final answer
x = 15,344,571.03
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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.