Finding the Fourth Proportional to 20,212,114.80, 30,319,484.40 and 10,646,176.80
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Solution
The fourth proportional to 20,212,114.80, 30,319,484.40 and 10,646,176.80 is: 15,969,956.37
Step by Step Solution
- Step 1: Write the proportion equation
20,212,114.80 : 30,319,484.40 = 10,646,176.80 : x - Step 2: Convert to fraction form
20,212,114.80/30,319,484.40 = 10,646,176.80/x - Step 3: Cross multiply
20,212,114.80x = 30,319,484.40 × 10,646,176.80 - Step 4: Simplify right side
20,212,114.80x = 322,786,591,407,241.94 - Step 5: Solve for x
x = 322,786,591,407,241.94/20,212,114.80 - Step 6: Final answer
x = 15,969,956.37
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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.