Finding the Fourth Proportional to 12,128,220.10, 18,192,330.15 and 4,936,051.90
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Solution
The fourth proportional to 12,128,220.10, 18,192,330.15 and 4,936,051.90 is: 7,404,077.85
Step by Step Solution
- Step 1: Write the proportion equation
12,128,220.10 : 18,192,330.15 = 4,936,051.90 : x - Step 2: Convert to fraction form
12,128,220.10/18,192,330.15 = 4,936,051.90/x - Step 3: Cross multiply
12,128,220.10x = 18,192,330.15 × 4,936,051.90 - Step 4: Simplify right side
12,128,220.10x = 89,798,285,802,334.78 - Step 5: Solve for x
x = 89,798,285,802,334.78/12,128,220.10 - Step 6: Final answer
x = 7,404,077.85
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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.