Finding the Fourth Proportional to 13,013,562.44, 17,958,717.84 and 7,212,718.68
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Solution
The fourth proportional to 13,013,562.44, 17,958,717.84 and 7,212,718.68 is: 9,953,552.71
Step by Step Solution
- Step 1: Write the proportion equation
13,013,562.44 : 17,958,717.84 = 7,212,718.68 : x - Step 2: Convert to fraction form
13,013,562.44/17,958,717.84 = 7,212,718.68/x - Step 3: Cross multiply
13,013,562.44x = 17,958,717.84 × 7,212,718.68 - Step 4: Simplify right side
13,013,562.44x = 129,531,179,633,417.25 - Step 5: Solve for x
x = 129,531,179,633,417.25/13,013,562.44 - Step 6: Final answer
x = 9,953,552.71
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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.