Finding the Fourth Proportional to 12,942,101.70, 17,860,474.24 and 7,141,257.09
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Solution
The fourth proportional to 12,942,101.70, 17,860,474.24 and 7,141,257.09 is: 9,855,141.09
Step by Step Solution
- Step 1: Write the proportion equation
12,942,101.70 : 17,860,474.24 = 7,141,257.09 : x - Step 2: Convert to fraction form
12,942,101.70/17,860,474.24 = 7,141,257.09/x - Step 3: Cross multiply
12,942,101.70x = 17,860,474.24 × 7,141,257.09 - Step 4: Simplify right side
12,942,101.70x = 127,546,238,279,309.22 - Step 5: Solve for x
x = 127,546,238,279,309.22/12,942,101.70 - Step 6: Final answer
x = 9,855,141.09
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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.