Finding the Fourth Proportional to 18,321,920.20, 27,475,881.90 and 5,538,176.20
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Solution
The fourth proportional to 18,321,920.20, 27,475,881.90 and 5,538,176.20 is: 8,305,148.89
Step by Step Solution
- Step 1: Write the proportion equation
18,321,920.20 : 27,475,881.90 = 5,538,176.20 : x - Step 2: Convert to fraction form
18,321,920.20/27,475,881.90 = 5,538,176.20/x - Step 3: Cross multiply
18,321,920.20x = 27,475,881.90 × 5,538,176.20 - Step 4: Simplify right side
18,321,920.20x = 152,166,275,212,590.78 - Step 5: Solve for x
x = 152,166,275,212,590.78/18,321,920.20 - Step 6: Final answer
x = 8,305,148.89
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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.