Finding the Fourth Proportional to 28,682,618.64, 39,581,794.58 and 15,629,837.19
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Solution
The fourth proportional to 28,682,618.64, 39,581,794.58 and 15,629,837.19 is: 21,569,055.90
Step by Step Solution
- Step 1: Write the proportion equation
28,682,618.64 : 39,581,794.58 = 15,629,837.19 : x - Step 2: Convert to fraction form
28,682,618.64/39,581,794.58 = 15,629,837.19/x - Step 3: Cross multiply
28,682,618.64x = 39,581,794.58 × 15,629,837.19 - Step 4: Simplify right side
28,682,618.64x = 618,657,004,834,761.25 - Step 5: Solve for x
x = 618,657,004,834,761.25/28,682,618.64 - Step 6: Final answer
x = 21,569,055.90
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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.