Finding the Fourth Proportional to 20,318,990.44, 28,040,224.92 and 11,026,560.48
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Solution
The fourth proportional to 20,318,990.44, 28,040,224.92 and 11,026,560.48 is: 15,216,663.29
Step by Step Solution
- Step 1: Write the proportion equation
20,318,990.44 : 28,040,224.92 = 11,026,560.48 : x - Step 2: Convert to fraction form
20,318,990.44/28,040,224.92 = 11,026,560.48/x - Step 3: Cross multiply
20,318,990.44x = 28,040,224.92 × 11,026,560.48 - Step 4: Simplify right side
20,318,990.44x = 309,187,235,953,183.19 - Step 5: Solve for x
x = 309,187,235,953,183.19/20,318,990.44 - Step 6: Final answer
x = 15,216,663.29
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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.