Finding the Fourth Proportional to 19,138,118.63, 28,703,263.20 and 5,487,608.21
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Solution
The fourth proportional to 19,138,118.63, 28,703,263.20 and 5,487,608.21 is: 8,230,289.81
Step by Step Solution
- Step 1: Write the proportion equation
19,138,118.63 : 28,703,263.20 = 5,487,608.21 : x - Step 2: Convert to fraction form
19,138,118.63/28,703,263.20 = 5,487,608.21/x - Step 3: Cross multiply
19,138,118.63x = 28,703,263.20 × 5,487,608.21 - Step 4: Simplify right side
19,138,118.63x = 157,512,262,790,110.88 - Step 5: Solve for x
x = 157,512,262,790,110.88/19,138,118.63 - Step 6: Final answer
x = 8,230,289.81
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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.