Finding the Fourth Proportional to 20,089,420.80, 27,729,300.81 and 13,121,163.63
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Solution
The fourth proportional to 20,089,420.80, 27,729,300.81 and 13,121,163.63 is: 18,111,059.40
Step by Step Solution
- Step 1: Write the proportion equation
20,089,420.80 : 27,729,300.81 = 13,121,163.63 : x - Step 2: Convert to fraction form
20,089,420.80/27,729,300.81 = 13,121,163.63/x - Step 3: Cross multiply
20,089,420.80x = 27,729,300.81 × 13,121,163.63 - Step 4: Simplify right side
20,089,420.80x = 363,840,693,322,705.94 - Step 5: Solve for x
x = 363,840,693,322,705.94/20,089,420.80 - Step 6: Final answer
x = 18,111,059.40
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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.