Finding the Fourth Proportional to 28,672,983.36, 39,568,561.74 and 15,620,210.94
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Solution
The fourth proportional to 28,672,983.36, 39,568,561.74 and 15,620,210.94 is: 21,555,806.50
Step by Step Solution
- Step 1: Write the proportion equation
28,672,983.36 : 39,568,561.74 = 15,620,210.94 : x - Step 2: Convert to fraction form
28,672,983.36/39,568,561.74 = 15,620,210.94/x - Step 3: Cross multiply
28,672,983.36x = 39,568,561.74 × 15,620,210.94 - Step 4: Simplify right side
28,672,983.36x = 618,069,280,971,213.50 - Step 5: Solve for x
x = 618,069,280,971,213.50/28,672,983.36 - Step 6: Final answer
x = 21,555,806.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.