Finding the Fourth Proportional to 10,808,979.38, 16,215,782.01 and 3,985,572.18
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Solution
The fourth proportional to 10,808,979.38, 16,215,782.01 and 3,985,572.18 is: 5,979,211.12
Step by Step Solution
- Step 1: Write the proportion equation
10,808,979.38 : 16,215,782.01 = 3,985,572.18 : x - Step 2: Convert to fraction form
10,808,979.38/16,215,782.01 = 3,985,572.18/x - Step 3: Cross multiply
10,808,979.38x = 16,215,782.01 × 3,985,572.18 - Step 4: Simplify right side
10,808,979.38x = 64,629,169,656,000.48 - Step 5: Solve for x
x = 64,629,169,656,000.48/10,808,979.38 - Step 6: Final answer
x = 5,979,211.12
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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.