Finding the Fourth Proportional to 21,319,084.22, 29,420,424.30 and 11,529,528.20
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Solution
The fourth proportional to 21,319,084.22, 29,420,424.30 and 11,529,528.20 is: 15,910,796.55
Step by Step Solution
- Step 1: Write the proportion equation
21,319,084.22 : 29,420,424.30 = 11,529,528.20 : x - Step 2: Convert to fraction form
21,319,084.22/29,420,424.30 = 11,529,528.20/x - Step 3: Cross multiply
21,319,084.22x = 29,420,424.30 × 11,529,528.20 - Step 4: Simplify right side
21,319,084.22x = 339,203,611,622,815.25 - Step 5: Solve for x
x = 339,203,611,622,815.25/21,319,084.22 - Step 6: Final answer
x = 15,910,796.55
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1.5x scale
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.