Finding the Fourth Proportional to 28,903,396.82, 39,883,021.63 and 15,847,220.05
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Solution
The fourth proportional to 28,903,396.82, 39,883,021.63 and 15,847,220.05 is: 21,867,153.68
Step by Step Solution
- Step 1: Write the proportion equation
28,903,396.82 : 39,883,021.63 = 15,847,220.05 : x - Step 2: Convert to fraction form
28,903,396.82/39,883,021.63 = 15,847,220.05/x - Step 3: Cross multiply
28,903,396.82x = 39,883,021.63 × 15,847,220.05 - Step 4: Simplify right side
28,903,396.82x = 632,035,020,029,519.75 - Step 5: Solve for x
x = 632,035,020,029,519.75/28,903,396.82 - Step 6: Final answer
x = 21,867,153.68
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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.