Finding the Fourth Proportional to 10,341,821.70, 15,512,732.55 and 5,239,988.10
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Solution
The fourth proportional to 10,341,821.70, 15,512,732.55 and 5,239,988.10 is: 7,859,982.15
Step by Step Solution
- Step 1: Write the proportion equation
10,341,821.70 : 15,512,732.55 = 5,239,988.10 : x - Step 2: Convert to fraction form
10,341,821.70/15,512,732.55 = 5,239,988.10/x - Step 3: Cross multiply
10,341,821.70x = 15,512,732.55 × 5,239,988.10 - Step 4: Simplify right side
10,341,821.70x = 81,286,533,960,482.66 - Step 5: Solve for x
x = 81,286,533,960,482.66/10,341,821.70 - Step 6: Final answer
x = 7,859,982.15
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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.