Finding the Fourth Proportional to 18,152,886.30, 27,192,004.65 and 12,479,516.70
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Solution
The fourth proportional to 18,152,886.30, 27,192,004.65 and 12,479,516.70 is: 18,693,615.47
Step by Step Solution
- Step 1: Write the proportion equation
18,152,886.30 : 27,192,004.65 = 12,479,516.70 : x - Step 2: Convert to fraction form
18,152,886.30/27,192,004.65 = 12,479,516.70/x - Step 3: Cross multiply
18,152,886.30x = 27,192,004.65 × 12,479,516.70 - Step 4: Simplify right side
18,152,886.30x = 339,343,076,136,152.62 - Step 5: Solve for x
x = 339,343,076,136,152.62/18,152,886.30 - Step 6: Final answer
x = 18,693,615.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.