Finding the Fourth Proportional to 13,640,450.24, 18,821,011.36 and 7,838,110.96
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Solution
The fourth proportional to 13,640,450.24, 18,821,011.36 and 7,838,110.96 is: 10,814,978.45
Step by Step Solution
- Step 1: Write the proportion equation
13,640,450.24 : 18,821,011.36 = 7,838,110.96 : x - Step 2: Convert to fraction form
13,640,450.24/18,821,011.36 = 7,838,110.96/x - Step 3: Cross multiply
13,640,450.24x = 18,821,011.36 × 7,838,110.96 - Step 4: Simplify right side
13,640,450.24x = 147,521,175,419,100.50 - Step 5: Solve for x
x = 147,521,175,419,100.50/13,640,450.24 - Step 6: Final answer
x = 10,814,978.45
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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.