Finding the Fourth Proportional to 12,315,364.32, 16,995,675.48 and 8,178,243.14
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Solution
The fourth proportional to 12,315,364.32, 16,995,675.48 and 8,178,243.14 is: 11,286,289.45
Step by Step Solution
- Step 1: Write the proportion equation
12,315,364.32 : 16,995,675.48 = 8,178,243.14 : x - Step 2: Convert to fraction form
12,315,364.32/16,995,675.48 = 8,178,243.14/x - Step 3: Cross multiply
12,315,364.32x = 16,995,675.48 × 8,178,243.14 - Step 4: Simplify right side
12,315,364.32x = 138,994,766,403,976.20 - Step 5: Solve for x
x = 138,994,766,403,976.20/12,315,364.32 - Step 6: Final answer
x = 11,286,289.45
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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.