Finding the Fourth Proportional to 21,699,663.68, 29,945,496.13 and 12,407,408.23
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Solution
The fourth proportional to 21,699,663.68, 29,945,496.13 and 12,407,408.23 is: 17,122,200.63
Step by Step Solution
- Step 1: Write the proportion equation
21,699,663.68 : 29,945,496.13 = 12,407,408.23 : x - Step 2: Convert to fraction form
21,699,663.68/29,945,496.13 = 12,407,408.23/x - Step 3: Cross multiply
21,699,663.68x = 29,945,496.13 × 12,407,408.23 - Step 4: Simplify right side
21,699,663.68x = 371,545,995,154,852.31 - Step 5: Solve for x
x = 371,545,995,154,852.31/21,699,663.68 - Step 6: Final answer
x = 17,122,200.63
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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.