Finding the Fourth Proportional to 13,146,786.70, 19,720,180.05 and 7,478,082.70
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Solution
The fourth proportional to 13,146,786.70, 19,720,180.05 and 7,478,082.70 is: 11,217,124.05
Step by Step Solution
- Step 1: Write the proportion equation
13,146,786.70 : 19,720,180.05 = 7,478,082.70 : x - Step 2: Convert to fraction form
13,146,786.70/19,720,180.05 = 7,478,082.70/x - Step 3: Cross multiply
13,146,786.70x = 19,720,180.05 × 7,478,082.70 - Step 4: Simplify right side
13,146,786.70x = 147,469,137,272,790.16 - Step 5: Solve for x
x = 147,469,137,272,790.16/13,146,786.70 - Step 6: Final answer
x = 11,217,124.05
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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.