Finding the Fourth Proportional to 18,344,109.20, 27,516,163.80 and 10,381,485.20
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Solution
The fourth proportional to 18,344,109.20, 27,516,163.80 and 10,381,485.20 is: 15,572,227.80
Step by Step Solution
- Step 1: Write the proportion equation
18,344,109.20 : 27,516,163.80 = 10,381,485.20 : x - Step 2: Convert to fraction form
18,344,109.20/27,516,163.80 = 10,381,485.20/x - Step 3: Cross multiply
18,344,109.20x = 27,516,163.80 × 10,381,485.20 - Step 4: Simplify right side
18,344,109.20x = 285,658,647,250,475.75 - Step 5: Solve for x
x = 285,658,647,250,475.75/18,344,109.20 - Step 6: Final answer
x = 15,572,227.80
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1.5x scale
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.