Finding the Fourth Proportional to 20,577,021.42, 28,398,627.90 and 11,877,529.08
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Solution
The fourth proportional to 20,577,021.42, 28,398,627.90 and 11,877,529.08 is: 16,392,339.87
Step by Step Solution
- Step 1: Write the proportion equation
20,577,021.42 : 28,398,627.90 = 11,877,529.08 : x - Step 2: Convert to fraction form
20,577,021.42/28,398,627.90 = 11,877,529.08/x - Step 3: Cross multiply
20,577,021.42x = 28,398,627.90 × 11,877,529.08 - Step 4: Simplify right side
20,577,021.42x = 337,305,528,714,349.31 - Step 5: Solve for x
x = 337,305,528,714,349.31/20,577,021.42 - Step 6: Final answer
x = 16,392,339.87
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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.