Finding the Fourth Proportional to 20,455,930.96, 28,229,783.19 and 11,164,096.99
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Solution
The fourth proportional to 20,455,930.96, 28,229,783.19 and 11,164,096.99 is: 15,406,780.47
Step by Step Solution
- Step 1: Write the proportion equation
20,455,930.96 : 28,229,783.19 = 11,164,096.99 : x - Step 2: Convert to fraction form
20,455,930.96/28,229,783.19 = 11,164,096.99/x - Step 3: Cross multiply
20,455,930.96x = 28,229,783.19 × 11,164,096.99 - Step 4: Simplify right side
20,455,930.96x = 315,160,037,596,051.50 - Step 5: Solve for x
x = 315,160,037,596,051.50/20,455,930.96 - Step 6: Final answer
x = 15,406,780.47
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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.