Finding the Fourth Proportional to 15,872,815.68, 21,904,395.26 and 8,808,338.18
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Solution
The fourth proportional to 15,872,815.68, 21,904,395.26 and 8,808,338.18 is: 12,155,456.53
Step by Step Solution
- Step 1: Write the proportion equation
15,872,815.68 : 21,904,395.26 = 8,808,338.18 : x - Step 2: Convert to fraction form
15,872,815.68/21,904,395.26 = 8,808,338.18/x - Step 3: Cross multiply
15,872,815.68x = 21,904,395.26 × 8,808,338.18 - Step 4: Simplify right side
15,872,815.68x = 192,941,321,078,469.03 - Step 5: Solve for x
x = 192,941,321,078,469.03/15,872,815.68 - Step 6: Final answer
x = 12,155,456.53
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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.