Finding the Fourth Proportional to 20,649,872.24, 28,500,390.56 and 11,952,840.12
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Solution
The fourth proportional to 20,649,872.24, 28,500,390.56 and 11,952,840.12 is: 16,496,983.99
Step by Step Solution
- Step 1: Write the proportion equation
20,649,872.24 : 28,500,390.56 = 11,952,840.12 : x - Step 2: Convert to fraction form
20,649,872.24/28,500,390.56 = 11,952,840.12/x - Step 3: Cross multiply
20,649,872.24x = 28,500,390.56 × 11,952,840.12 - Step 4: Simplify right side
20,649,872.24x = 340,660,611,721,237.25 - Step 5: Solve for x
x = 340,660,611,721,237.25/20,649,872.24 - Step 6: Final answer
x = 16,496,983.99
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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.