Finding the Fourth Proportional to 15,202,351.48, 20,978,985.74 and 8,232,972.42
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Solution
The fourth proportional to 15,202,351.48, 20,978,985.74 and 8,232,972.42 is: 11,361,361.51
Step by Step Solution
- Step 1: Write the proportion equation
15,202,351.48 : 20,978,985.74 = 8,232,972.42 : x - Step 2: Convert to fraction form
15,202,351.48/20,978,985.74 = 8,232,972.42/x - Step 3: Cross multiply
15,202,351.48x = 20,978,985.74 × 8,232,972.42 - Step 4: Simplify right side
15,202,351.48x = 172,719,410,996,993.28 - Step 5: Solve for x
x = 172,719,410,996,993.28/15,202,351.48 - Step 6: Final answer
x = 11,361,361.51
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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.