Finding the Fourth Proportional to 19,486,880.20, 29,230,320.30 and 18,441,785.80
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Solution
The fourth proportional to 19,486,880.20, 29,230,320.30 and 18,441,785.80 is: 27,662,678.70
Step by Step Solution
- Step 1: Write the proportion equation
19,486,880.20 : 29,230,320.30 = 18,441,785.80 : x - Step 2: Convert to fraction form
19,486,880.20/29,230,320.30 = 18,441,785.80/x - Step 3: Cross multiply
19,486,880.20x = 29,230,320.30 × 18,441,785.80 - Step 4: Simplify right side
19,486,880.20x = 539,059,305,837,991.75 - Step 5: Solve for x
x = 539,059,305,837,991.75/19,486,880.20 - Step 6: Final answer
x = 27,662,678.70
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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.