Finding the Fourth Proportional to 13,721,939.20, 18,937,439.04 and 7,612,336
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Solution
The fourth proportional to 13,721,939.20, 18,937,439.04 and 7,612,336 is: 10,505,668.83
Step by Step Solution
- Step 1: Write the proportion equation
13,721,939.20 : 18,937,439.04 = 7,612,336 : x - Step 2: Convert to fraction form
13,721,939.20/18,937,439.04 = 7,612,336/x - Step 3: Cross multiply
13,721,939.20x = 18,937,439.04 × 7,612,336 - Step 4: Simplify right side
13,721,939.20x = 144,158,148,951,997.44 - Step 5: Solve for x
x = 144,158,148,951,997.44/13,721,939.20 - Step 6: Final answer
x = 10,505,668.83
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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.