Finding the Fourth Proportional to 18,139,613.53, 27,209,251.26 and 7,354,350.74
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Solution
The fourth proportional to 18,139,613.53, 27,209,251.26 and 7,354,350.74 is: 11,031,457.58
Step by Step Solution
- Step 1: Write the proportion equation
18,139,613.53 : 27,209,251.26 = 7,354,350.74 : x - Step 2: Convert to fraction form
18,139,613.53/27,209,251.26 = 7,354,350.74/x - Step 3: Cross multiply
18,139,613.53x = 27,209,251.26 × 7,354,350.74 - Step 4: Simplify right side
18,139,613.53x = 200,106,377,138,826.94 - Step 5: Solve for x
x = 200,106,377,138,826.94/18,139,613.53 - Step 6: Final answer
x = 11,031,457.58
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.