Finding the Fourth Proportional to 21,362,419.98, 29,497,035.42 and 19,730,174.40
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Solution
The fourth proportional to 21,362,419.98, 29,497,035.42 and 19,730,174.40 is: 27,243,245.55
Step by Step Solution
- Step 1: Write the proportion equation
21,362,419.98 : 29,497,035.42 = 19,730,174.40 : x - Step 2: Convert to fraction form
21,362,419.98/29,497,035.42 = 19,730,174.40/x - Step 3: Cross multiply
21,362,419.98x = 29,497,035.42 × 19,730,174.40 - Step 4: Simplify right side
21,362,419.98x = 581,981,653,119,577.25 - Step 5: Solve for x
x = 581,981,653,119,577.25/21,362,419.98 - Step 6: Final answer
x = 27,243,245.55
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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.