Finding the Fourth Proportional to 20,037,578.71, 27,649,525.80 and 11,217,512.96
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Solution
The fourth proportional to 20,037,578.71, 27,649,525.80 and 11,217,512.96 is: 15,478,861.92
Step by Step Solution
- Step 1: Write the proportion equation
20,037,578.71 : 27,649,525.80 = 11,217,512.96 : x - Step 2: Convert to fraction form
20,037,578.71/27,649,525.80 = 11,217,512.96/x - Step 3: Cross multiply
20,037,578.71x = 27,649,525.80 × 11,217,512.96 - Step 4: Simplify right side
20,037,578.71x = 310,158,913,999,354.38 - Step 5: Solve for x
x = 310,158,913,999,354.38/20,037,578.71 - Step 6: Final answer
x = 15,478,861.92
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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.