Finding the Fourth Proportional to 18,715,238.30, 28,070,783.85 and 15,343,564.70
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Solution
The fourth proportional to 18,715,238.30, 28,070,783.85 and 15,343,564.70 is: 23,013,647.02
Step by Step Solution
- Step 1: Write the proportion equation
18,715,238.30 : 28,070,783.85 = 15,343,564.70 : x - Step 2: Convert to fraction form
18,715,238.30/28,070,783.85 = 15,343,564.70/x - Step 3: Cross multiply
18,715,238.30x = 28,070,783.85 × 15,343,564.70 - Step 4: Simplify right side
18,715,238.30x = 430,705,888,182,190.12 - Step 5: Solve for x
x = 430,705,888,182,190.12/18,715,238.30 - Step 6: Final answer
x = 23,013,647.02
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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.