Finding the Fourth Proportional to 12,115,543.68, 16,721,259.84 and 7,769,537.28
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Solution
The fourth proportional to 12,115,543.68, 16,721,259.84 and 7,769,537.28 is: 10,723,121.89
Step by Step Solution
- Step 1: Write the proportion equation
12,115,543.68 : 16,721,259.84 = 7,769,537.28 : x - Step 2: Convert to fraction form
12,115,543.68/16,721,259.84 = 7,769,537.28/x - Step 3: Cross multiply
12,115,543.68x = 16,721,259.84 × 7,769,537.28 - Step 4: Simplify right side
12,115,543.68x = 129,916,451,695,446.84 - Step 5: Solve for x
x = 129,916,451,695,446.84/12,115,543.68 - Step 6: Final answer
x = 10,723,121.89
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1.5x scale
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.