Finding the Fourth Proportional to 21,418,859.48, 29,582,362.58 and 14,437,496.20
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Solution
The fourth proportional to 21,418,859.48, 29,582,362.58 and 14,437,496.20 is: 19,940,148.90
Step by Step Solution
- Step 1: Write the proportion equation
21,418,859.48 : 29,582,362.58 = 14,437,496.20 : x - Step 2: Convert to fraction form
21,418,859.48/29,582,362.58 = 14,437,496.20/x - Step 3: Cross multiply
21,418,859.48x = 29,582,362.58 × 14,437,496.20 - Step 4: Simplify right side
21,418,859.48x = 427,095,247,335,772.12 - Step 5: Solve for x
x = 427,095,247,335,772.12/21,418,859.48 - Step 6: Final answer
x = 19,940,148.90
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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.