Finding the Fourth Proportional to 18,343,873.20, 27,508,811.40 and 5,560,129.20
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Solution
The fourth proportional to 18,343,873.20, 27,508,811.40 and 5,560,129.20 is: 8,338,072.55
Step by Step Solution
- Step 1: Write the proportion equation
18,343,873.20 : 27,508,811.40 = 5,560,129.20 : x - Step 2: Convert to fraction form
18,343,873.20/27,508,811.40 = 5,560,129.20/x - Step 3: Cross multiply
18,343,873.20x = 27,508,811.40 × 5,560,129.20 - Step 4: Simplify right side
18,343,873.20x = 152,952,545,522,432.88 - Step 5: Solve for x
x = 152,952,545,522,432.88/18,343,873.20 - Step 6: Final answer
x = 8,338,072.55
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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.