Finding the Fourth Proportional to 18,135,972.80, 27,203,959.20 and 18,135,972.80
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Solution
The fourth proportional to 18,135,972.80, 27,203,959.20 and 18,135,972.80 is: 27,203,959.20
Step by Step Solution
- Step 1: Write the proportion equation
18,135,972.80 : 27,203,959.20 = 18,135,972.80 : x - Step 2: Convert to fraction form
18,135,972.80/27,203,959.20 = 18,135,972.80/x - Step 3: Cross multiply
18,135,972.80x = 27,203,959.20 × 18,135,972.80 - Step 4: Simplify right side
18,135,972.80x = 493,370,264,103,509.75 - Step 5: Solve for x
x = 493,370,264,103,509.75/18,135,972.80 - Step 6: Final answer
x = 27,203,959.20
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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.