Finding the Fourth Proportional to 12,127,404.20, 18,198,104.70 and 4,555,135.40
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Solution
The fourth proportional to 12,127,404.20, 18,198,104.70 and 4,555,135.40 is: 6,835,331.75
Step by Step Solution
- Step 1: Write the proportion equation
12,127,404.20 : 18,198,104.70 = 4,555,135.40 : x - Step 2: Convert to fraction form
12,127,404.20/18,198,104.70 = 4,555,135.40/x - Step 3: Cross multiply
12,127,404.20x = 18,198,104.70 × 4,555,135.40 - Step 4: Simplify right side
12,127,404.20x = 82,894,830,931,876.39 - Step 5: Solve for x
x = 82,894,830,931,876.39/12,127,404.20 - Step 6: Final answer
x = 6,835,331.75
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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.