Finding the Fourth Proportional to 20,318,982.42, 28,040,213.87 and 11,026,552.58
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Solution
The fourth proportional to 20,318,982.42, 28,040,213.87 and 11,026,552.58 is: 15,216,652.40
Step by Step Solution
- Step 1: Write the proportion equation
20,318,982.42 : 28,040,213.87 = 11,026,552.58 : x - Step 2: Convert to fraction form
20,318,982.42/28,040,213.87 = 11,026,552.58/x - Step 3: Cross multiply
20,318,982.42x = 28,040,213.87 × 11,026,552.58 - Step 4: Simplify right side
20,318,982.42x = 309,186,892,592,000.31 - Step 5: Solve for x
x = 309,186,892,592,000.31/20,318,982.42 - Step 6: Final answer
x = 15,216,652.40
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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.