Finding the Fourth Proportional to 18,206,921.60, 27,306,883.20 and 5,427,843.20
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Solution
The fourth proportional to 18,206,921.60, 27,306,883.20 and 5,427,843.20 is: 8,140,721.62
Step by Step Solution
- Step 1: Write the proportion equation
18,206,921.60 : 27,306,883.20 = 5,427,843.20 : x - Step 2: Convert to fraction form
18,206,921.60/27,306,883.20 = 5,427,843.20/x - Step 3: Cross multiply
18,206,921.60x = 27,306,883.20 × 5,427,843.20 - Step 4: Simplify right side
18,206,921.60x = 148,217,480,290,314.25 - Step 5: Solve for x
x = 148,217,480,290,314.25/18,206,921.60 - Step 6: Final answer
x = 8,140,721.62
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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.