Finding the Fourth Proportional to 18,189,689.20, 27,284,533.80 and 15,745,060.60
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Solution
The fourth proportional to 18,189,689.20, 27,284,533.80 and 15,745,060.60 is: 23,617,590.90
Step by Step Solution
- Step 1: Write the proportion equation
18,189,689.20 : 27,284,533.80 = 15,745,060.60 : x - Step 2: Convert to fraction form
18,189,689.20/27,284,533.80 = 15,745,060.60/x - Step 3: Cross multiply
18,189,689.20x = 27,284,533.80 × 15,745,060.60 - Step 4: Simplify right side
18,189,689.20x = 429,596,638,123,748.31 - Step 5: Solve for x
x = 429,596,638,123,748.31/18,189,689.20 - Step 6: Final answer
x = 23,617,590.90
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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.