Finding the Fourth Proportional to 28,728,816.19, 39,635,406.56 and 22,115,427.28
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Solution
The fourth proportional to 28,728,816.19, 39,635,406.56 and 22,115,427.28 is: 30,511,314.69
Step by Step Solution
- Step 1: Write the proportion equation
28,728,816.19 : 39,635,406.56 = 22,115,427.28 : x - Step 2: Convert to fraction form
28,728,816.19/39,635,406.56 = 22,115,427.28/x - Step 3: Cross multiply
28,728,816.19x = 39,635,406.56 × 22,115,427.28 - Step 4: Simplify right side
28,728,816.19x = 876,553,951,545,664.75 - Step 5: Solve for x
x = 876,553,951,545,664.75/28,728,816.19 - Step 6: Final answer
x = 30,511,314.69
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1.5x scale
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.