Finding the Fourth Proportional to 18,241,738.40, 27,344,559.60 and 8,640,240.80
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Solution
The fourth proportional to 18,241,738.40, 27,344,559.60 and 8,640,240.80 is: 12,951,812.72
Step by Step Solution
- Step 1: Write the proportion equation
18,241,738.40 : 27,344,559.60 = 8,640,240.80 : x - Step 2: Convert to fraction form
18,241,738.40/27,344,559.60 = 8,640,240.80/x - Step 3: Cross multiply
18,241,738.40x = 27,344,559.60 × 8,640,240.80 - Step 4: Simplify right side
18,241,738.40x = 236,263,579,513,951.72 - Step 5: Solve for x
x = 236,263,579,513,951.72/18,241,738.40 - Step 6: Final answer
x = 12,951,812.72
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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.