Finding the Fourth Proportional to 15,106,728.40, 22,666,789.68 and 7,916,552.80
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Solution
The fourth proportional to 15,106,728.40, 22,666,789.68 and 7,916,552.80 is: 11,878,338.75
Step by Step Solution
- Step 1: Write the proportion equation
15,106,728.40 : 22,666,789.68 = 7,916,552.80 : x - Step 2: Convert to fraction form
15,106,728.40/22,666,789.68 = 7,916,552.80/x - Step 3: Cross multiply
15,106,728.40x = 22,666,789.68 × 7,916,552.80 - Step 4: Simplify right side
15,106,728.40x = 179,442,837,308,215.09 - Step 5: Solve for x
x = 179,442,837,308,215.09/15,106,728.40 - Step 6: Final answer
x = 11,878,338.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.