Finding the Fourth Proportional to 20,286,327.68, 27,995,809.24 and 11,118,993.92
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Solution
The fourth proportional to 20,286,327.68, 27,995,809.24 and 11,118,993.92 is: 15,344,582.70
Step by Step Solution
- Step 1: Write the proportion equation
20,286,327.68 : 27,995,809.24 = 11,118,993.92 : x - Step 2: Convert to fraction form
20,286,327.68/27,995,809.24 = 11,118,993.92/x - Step 3: Cross multiply
20,286,327.68x = 27,995,809.24 × 11,118,993.92 - Step 4: Simplify right side
20,286,327.68x = 311,285,232,725,039.81 - Step 5: Solve for x
x = 311,285,232,725,039.81/20,286,327.68 - Step 6: Final answer
x = 15,344,582.70
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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.