Finding the Fourth Proportional to 21,311,956.68, 29,390,874.84 and 13,967,113.92
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Solution
The fourth proportional to 21,311,956.68, 29,390,874.84 and 13,967,113.92 is: 19,261,755.42
Step by Step Solution
- Step 1: Write the proportion equation
21,311,956.68 : 29,390,874.84 = 13,967,113.92 : x - Step 2: Convert to fraction form
21,311,956.68/29,390,874.84 = 13,967,113.92/x - Step 3: Cross multiply
21,311,956.68x = 29,390,874.84 × 13,967,113.92 - Step 4: Simplify right side
21,311,956.68x = 410,505,697,098,741.75 - Step 5: Solve for x
x = 410,505,697,098,741.75/21,311,956.68 - Step 6: Final answer
x = 19,261,755.42
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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.