Finding the Fourth Proportional to 13,309,210.62, 18,366,766.00 and 7,197,639.12
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Solution
The fourth proportional to 13,309,210.62, 18,366,766.00 and 7,197,639.12 is: 9,932,771.91
Step by Step Solution
- Step 1: Write the proportion equation
13,309,210.62 : 18,366,766.00 = 7,197,639.12 : x - Step 2: Convert to fraction form
13,309,210.62/18,366,766.00 = 7,197,639.12/x - Step 3: Cross multiply
13,309,210.62x = 18,366,766.00 × 7,197,639.12 - Step 4: Simplify right side
13,309,210.62x = 132,197,353,451,491.81 - Step 5: Solve for x
x = 132,197,353,451,491.81/13,309,210.62 - Step 6: Final answer
x = 9,932,771.91
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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.