Finding the Fourth Proportional to 21,420,236.24, 29,552,626.20 and 13,689,737.96
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Solution
The fourth proportional to 21,420,236.24, 29,552,626.20 and 13,689,737.96 is: 18,887,173.05
Step by Step Solution
- Step 1: Write the proportion equation
21,420,236.24 : 29,552,626.20 = 13,689,737.96 : x - Step 2: Convert to fraction form
21,420,236.24/29,552,626.20 = 13,689,737.96/x - Step 3: Cross multiply
21,420,236.24x = 29,552,626.20 × 13,689,737.96 - Step 4: Simplify right side
21,420,236.24x = 404,567,708,707,830.56 - Step 5: Solve for x
x = 404,567,708,707,830.56/21,420,236.24 - Step 6: Final answer
x = 18,887,173.05
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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.