Finding the Fourth Proportional to 21,011,063.70, 31,493,267.55 and 8,227,319.70
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Solution
The fourth proportional to 21,011,063.70, 31,493,267.55 and 8,227,319.70 is: 12,331,844.99
Step by Step Solution
- Step 1: Write the proportion equation
21,011,063.70 : 31,493,267.55 = 8,227,319.70 : x - Step 2: Convert to fraction form
21,011,063.70/31,493,267.55 = 8,227,319.70/x - Step 3: Cross multiply
21,011,063.70x = 31,493,267.55 × 8,227,319.70 - Step 4: Simplify right side
21,011,063.70x = 259,105,180,531,485.75 - Step 5: Solve for x
x = 259,105,180,531,485.75/21,011,063.70 - Step 6: Final answer
x = 12,331,844.99
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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.