Finding the Fourth Proportional to 12,120,969.21, 16,727,290.85 and 6,614,698.74
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Solution
The fourth proportional to 12,120,969.21, 16,727,290.85 and 6,614,698.74 is: 9,128,477.09
Step by Step Solution
- Step 1: Write the proportion equation
12,120,969.21 : 16,727,290.85 = 6,614,698.74 : x - Step 2: Convert to fraction form
12,120,969.21/16,727,290.85 = 6,614,698.74/x - Step 3: Cross multiply
12,120,969.21x = 16,727,290.85 × 6,614,698.74 - Step 4: Simplify right side
12,120,969.21x = 110,645,989,662,917.94 - Step 5: Solve for x
x = 110,645,989,662,917.94/12,120,969.21 - Step 6: Final answer
x = 9,128,477.09
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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.