Finding the Fourth Proportional to 20,273,138.64, 27,977,630.58 and 11,105,782.20
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Solution
The fourth proportional to 20,273,138.64, 27,977,630.58 and 11,105,782.20 is: 15,326,362.49
Step by Step Solution
- Step 1: Write the proportion equation
20,273,138.64 : 27,977,630.58 = 11,105,782.20 : x - Step 2: Convert to fraction form
20,273,138.64/27,977,630.58 = 11,105,782.20/x - Step 3: Cross multiply
20,273,138.64x = 27,977,630.58 × 11,105,782.20 - Step 4: Simplify right side
20,273,138.64x = 310,713,471,693,539.62 - Step 5: Solve for x
x = 310,713,471,693,539.62/20,273,138.64 - Step 6: Final answer
x = 15,326,362.49
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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.