Finding the Fourth Proportional to 20,318,988.44, 28,040,222.16 and 11,026,558.48
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Solution
The fourth proportional to 20,318,988.44, 28,040,222.16 and 11,026,558.48 is: 15,216,660.53
Step by Step Solution
- Step 1: Write the proportion equation
20,318,988.44 : 28,040,222.16 = 11,026,558.48 : x - Step 2: Convert to fraction form
20,318,988.44/28,040,222.16 = 11,026,558.48/x - Step 3: Cross multiply
20,318,988.44x = 28,040,222.16 × 11,026,558.48 - Step 4: Simplify right side
20,318,988.44x = 309,187,149,439,431.94 - Step 5: Solve for x
x = 309,187,149,439,431.94/20,318,988.44 - Step 6: Final answer
x = 15,216,660.53
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.