Finding the Fourth Proportional to 12,112,992.57, 16,716,934.67 and 6,957,349.05
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Solution
The fourth proportional to 12,112,992.57, 16,716,934.67 and 6,957,349.05 is: 9,601,718.88
Step by Step Solution
- Step 1: Write the proportion equation
12,112,992.57 : 16,716,934.67 = 6,957,349.05 : x - Step 2: Convert to fraction form
12,112,992.57/16,716,934.67 = 6,957,349.05/x - Step 3: Cross multiply
12,112,992.57x = 16,716,934.67 × 6,957,349.05 - Step 4: Simplify right side
12,112,992.57x = 116,305,549,510,449.81 - Step 5: Solve for x
x = 116,305,549,510,449.81/12,112,992.57 - Step 6: Final answer
x = 9,601,718.88
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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.