Finding the Fourth Proportional to 20,703,991.74, 28,573,634.70 and 12,446,727.24
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Solution
The fourth proportional to 20,703,991.74, 28,573,634.70 and 12,446,727.24 is: 17,177,761.75
Step by Step Solution
- Step 1: Write the proportion equation
20,703,991.74 : 28,573,634.70 = 12,446,727.24 : x - Step 2: Convert to fraction form
20,703,991.74/28,573,634.70 = 12,446,727.24/x - Step 3: Cross multiply
20,703,991.74x = 28,573,634.70 × 12,446,727.24 - Step 4: Simplify right side
20,703,991.74x = 355,648,237,366,299.25 - Step 5: Solve for x
x = 355,648,237,366,299.25/20,703,991.74 - Step 6: Final answer
x = 17,177,761.75
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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.