Finding the Fourth Proportional to 20,446,543.44, 28,211,197.32 and 12,497,073.84
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Solution
The fourth proportional to 20,446,543.44, 28,211,197.32 and 12,497,073.84 is: 17,242,885.92
Step by Step Solution
- Step 1: Write the proportion equation
20,446,543.44 : 28,211,197.32 = 12,497,073.84 : x - Step 2: Convert to fraction form
20,446,543.44/28,211,197.32 = 12,497,073.84/x - Step 3: Cross multiply
20,446,543.44x = 28,211,197.32 × 12,497,073.84 - Step 4: Simplify right side
20,446,543.44x = 352,557,416,022,850.12 - Step 5: Solve for x
x = 352,557,416,022,850.12/20,446,543.44 - Step 6: Final answer
x = 17,242,885.92
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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.