Finding the Fourth Proportional to 21,508,716.20, 32,263,074.30 and 19,717,125.80
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Solution
The fourth proportional to 21,508,716.20, 32,263,074.30 and 19,717,125.80 is: 29,575,688.70
Step by Step Solution
- Step 1: Write the proportion equation
21,508,716.20 : 32,263,074.30 = 19,717,125.80 : x - Step 2: Convert to fraction form
21,508,716.20/32,263,074.30 = 19,717,125.80/x - Step 3: Cross multiply
21,508,716.20x = 32,263,074.30 × 19,717,125.80 - Step 4: Simplify right side
21,508,716.20x = 636,135,094,667,847 - Step 5: Solve for x
x = 636,135,094,667,847/21,508,716.20 - Step 6: Final answer
x = 29,575,688.70
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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.