Finding the Fourth Proportional to 21,306,375.12, 29,403,317.96 and 12,933,843.92
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Solution
The fourth proportional to 21,306,375.12, 29,403,317.96 and 12,933,843.92 is: 17,849,020.45
Step by Step Solution
- Step 1: Write the proportion equation
21,306,375.12 : 29,403,317.96 = 12,933,843.92 : x - Step 2: Convert to fraction form
21,306,375.12/29,403,317.96 = 12,933,843.92/x - Step 3: Cross multiply
21,306,375.12x = 29,403,317.96 × 12,933,843.92 - Step 4: Simplify right side
21,306,375.12x = 380,297,925,224,772.81 - Step 5: Solve for x
x = 380,297,925,224,772.81/21,306,375.12 - Step 6: Final answer
x = 17,849,020.45
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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.