Finding the Fourth Proportional to 20,212,230.90, 30,318,346.35 and 8,083,566.30
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Solution
The fourth proportional to 20,212,230.90, 30,318,346.35 and 8,083,566.30 is: 12,125,349.45
Step by Step Solution
- Step 1: Write the proportion equation
20,212,230.90 : 30,318,346.35 = 8,083,566.30 : x - Step 2: Convert to fraction form
20,212,230.90/30,318,346.35 = 8,083,566.30/x - Step 3: Cross multiply
20,212,230.90x = 30,318,346.35 × 8,083,566.30 - Step 4: Simplify right side
20,212,230.90x = 245,080,362,826,588 - Step 5: Solve for x
x = 245,080,362,826,588/20,212,230.90 - Step 6: Final answer
x = 12,125,349.45
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Double scale
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Similar ratio
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1.5x scale
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.