Finding the Fourth Proportional to 13,645,543.76, 18,830,845.68 and 7,845,459.92
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Solution
The fourth proportional to 13,645,543.76, 18,830,845.68 and 7,845,459.92 is: 10,826,731.98
Step by Step Solution
- Step 1: Write the proportion equation
13,645,543.76 : 18,830,845.68 = 7,845,459.92 : x - Step 2: Convert to fraction form
13,645,543.76/18,830,845.68 = 7,845,459.92/x - Step 3: Cross multiply
13,645,543.76x = 18,830,845.68 × 7,845,459.92 - Step 4: Simplify right side
13,645,543.76x = 147,736,645,042,145.16 - Step 5: Solve for x
x = 147,736,645,042,145.16/13,645,543.76 - Step 6: Final answer
x = 10,826,731.98
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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.