Finding the Fourth Proportional to 20,467,609.49, 28,247,778.15 and 11,649,204.95
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Solution
The fourth proportional to 20,467,609.49, 28,247,778.15 and 11,649,204.95 is: 16,077,312.65
Step by Step Solution
- Step 1: Write the proportion equation
20,467,609.49 : 28,247,778.15 = 11,649,204.95 : x - Step 2: Convert to fraction form
20,467,609.49/28,247,778.15 = 11,649,204.95/x - Step 3: Cross multiply
20,467,609.49x = 28,247,778.15 × 11,649,204.95 - Step 4: Simplify right side
20,467,609.49x = 329,064,156,932,085.25 - Step 5: Solve for x
x = 329,064,156,932,085.25/20,467,609.49 - Step 6: Final answer
x = 16,077,312.65
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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.