Finding the Fourth Proportional to 12,542,931.14, 17,305,365.79 and 7,312,236.80
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Solution
The fourth proportional to 12,542,931.14, 17,305,365.79 and 7,312,236.80 is: 10,088,625.32
Step by Step Solution
- Step 1: Write the proportion equation
12,542,931.14 : 17,305,365.79 = 7,312,236.80 : x - Step 2: Convert to fraction form
12,542,931.14/17,305,365.79 = 7,312,236.80/x - Step 3: Cross multiply
12,542,931.14x = 17,305,365.79 × 7,312,236.80 - Step 4: Simplify right side
12,542,931.14x = 126,540,932,631,994.19 - Step 5: Solve for x
x = 126,540,932,631,994.19/12,542,931.14 - Step 6: Final answer
x = 10,088,625.32
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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.