Finding the Fourth Proportional to 18,467,132.70, 27,700,699.05 and 14,215,604.70
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Solution
The fourth proportional to 18,467,132.70, 27,700,699.05 and 14,215,604.70 is: 21,323,407.05
Step by Step Solution
- Step 1: Write the proportion equation
18,467,132.70 : 27,700,699.05 = 14,215,604.70 : x - Step 2: Convert to fraction form
18,467,132.70/27,700,699.05 = 14,215,604.70/x - Step 3: Cross multiply
18,467,132.70x = 27,700,699.05 × 14,215,604.70 - Step 4: Simplify right side
18,467,132.70x = 393,782,187,608,465.50 - Step 5: Solve for x
x = 393,782,187,608,465.50/18,467,132.70 - Step 6: Final answer
x = 21,323,407.05
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Double scale
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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.