Finding the Fourth Proportional to 21,884,481.36, 30,201,732.36 and 13,185,383.76
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Solution
The fourth proportional to 21,884,481.36, 30,201,732.36 and 13,185,383.76 is: 18,196,521.31
Step by Step Solution
- Step 1: Write the proportion equation
21,884,481.36 : 30,201,732.36 = 13,185,383.76 : x - Step 2: Convert to fraction form
21,884,481.36/30,201,732.36 = 13,185,383.76/x - Step 3: Cross multiply
21,884,481.36x = 30,201,732.36 × 13,185,383.76 - Step 4: Simplify right side
21,884,481.36x = 398,221,431,383,410.44 - Step 5: Solve for x
x = 398,221,431,383,410.44/21,884,481.36 - Step 6: Final answer
x = 18,196,521.31
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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.