Finding the Fourth Proportional to 20,279,936.64, 27,975,844.80 and 13,751,356.80
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Solution
The fourth proportional to 20,279,936.64, 27,975,844.80 and 13,751,356.80 is: 18,969,774.44
Step by Step Solution
- Step 1: Write the proportion equation
20,279,936.64 : 27,975,844.80 = 13,751,356.80 : x - Step 2: Convert to fraction form
20,279,936.64/27,975,844.80 = 13,751,356.80/x - Step 3: Cross multiply
20,279,936.64x = 27,975,844.80 × 13,751,356.80 - Step 4: Simplify right side
20,279,936.64x = 384,705,823,626,224.69 - Step 5: Solve for x
x = 384,705,823,626,224.69/20,279,936.64 - Step 6: Final answer
x = 18,969,774.44
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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.