Finding the Fourth Proportional to 12,136,256.87, 16,748,543.61 and 6,979,622.49
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Solution
The fourth proportional to 12,136,256.87, 16,748,543.61 and 6,979,622.49 is: 9,632,171.84
Step by Step Solution
- Step 1: Write the proportion equation
12,136,256.87 : 16,748,543.61 = 6,979,622.49 : x - Step 2: Convert to fraction form
12,136,256.87/16,748,543.61 = 6,979,622.49/x - Step 3: Cross multiply
12,136,256.87x = 16,748,543.61 × 6,979,622.49 - Step 4: Simplify right side
12,136,256.87x = 116,898,511,655,101.78 - Step 5: Solve for x
x = 116,898,511,655,101.78/12,136,256.87 - Step 6: Final answer
x = 9,632,171.84
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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.