Finding the Fourth Proportional to 18,821,423.70, 28,231,552.35 and 5,358,251.70
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Solution
The fourth proportional to 18,821,423.70, 28,231,552.35 and 5,358,251.70 is: 8,037,211.52
Step by Step Solution
- Step 1: Write the proportion equation
18,821,423.70 : 28,231,552.35 = 5,358,251.70 : x - Step 2: Convert to fraction form
18,821,423.70/28,231,552.35 = 5,358,251.70/x - Step 3: Cross multiply
18,821,423.70x = 28,231,552.35 × 5,358,251.70 - Step 4: Simplify right side
18,821,423.70x = 151,271,763,373,026.50 - Step 5: Solve for x
x = 151,271,763,373,026.50/18,821,423.70 - Step 6: Final answer
x = 8,037,211.52
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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.