Finding the Fourth Proportional to 12,141,581.25, 18,221,816.13 and 8,474,487.99
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Solution
The fourth proportional to 12,141,581.25, 18,221,816.13 and 8,474,487.99 is: 12,718,323.82
Step by Step Solution
- Step 1: Write the proportion equation
12,141,581.25 : 18,221,816.13 = 8,474,487.99 : x - Step 2: Convert to fraction form
12,141,581.25/18,221,816.13 = 8,474,487.99/x - Step 3: Cross multiply
12,141,581.25x = 18,221,816.13 × 8,474,487.99 - Step 4: Simplify right side
12,141,581.25x = 154,420,561,952,059.84 - Step 5: Solve for x
x = 154,420,561,952,059.84/12,141,581.25 - Step 6: Final answer
x = 12,718,323.82
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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.