Finding the Fourth Proportional to 12,922,135.80, 17,832,665.34 and 7,121,125.68
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Solution
The fourth proportional to 12,922,135.80, 17,832,665.34 and 7,121,125.68 is: 9,827,218.43
Step by Step Solution
- Step 1: Write the proportion equation
12,922,135.80 : 17,832,665.34 = 7,121,125.68 : x - Step 2: Convert to fraction form
12,922,135.80/17,832,665.34 = 7,121,125.68/x - Step 3: Cross multiply
12,922,135.80x = 17,832,665.34 × 7,121,125.68 - Step 4: Simplify right side
12,922,135.80x = 126,988,651,095,519.92 - Step 5: Solve for x
x = 126,988,651,095,519.92/12,922,135.80 - Step 6: Final answer
x = 9,827,218.43
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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.