Finding the Fourth Proportional to 20,344,544.98, 28,059,234.78 and 13,382,372.68
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Solution
The fourth proportional to 20,344,544.98, 28,059,234.78 and 13,382,372.68 is: 18,456,993.62
Step by Step Solution
- Step 1: Write the proportion equation
20,344,544.98 : 28,059,234.78 = 13,382,372.68 : x - Step 2: Convert to fraction form
20,344,544.98/28,059,234.78 = 13,382,372.68/x - Step 3: Cross multiply
20,344,544.98x = 28,059,234.78 × 13,382,372.68 - Step 4: Simplify right side
20,344,544.98x = 375,499,136,941,577.81 - Step 5: Solve for x
x = 375,499,136,941,577.81/20,344,544.98 - Step 6: Final answer
x = 18,456,993.62
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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.