Finding the Fourth Proportional to 28,716,702.47, 39,629,172.62 and 15,664,245.83
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Solution
The fourth proportional to 28,716,702.47, 39,629,172.62 and 15,664,245.83 is: 21,616,726.45
Step by Step Solution
- Step 1: Write the proportion equation
28,716,702.47 : 39,629,172.62 = 15,664,245.83 : x - Step 2: Convert to fraction form
28,716,702.47/39,629,172.62 = 15,664,245.83/x - Step 3: Cross multiply
28,716,702.47x = 39,629,172.62 × 15,664,245.83 - Step 4: Simplify right side
28,716,702.47x = 620,761,101,959,185.12 - Step 5: Solve for x
x = 620,761,101,959,185.12/28,716,702.47 - Step 6: Final answer
x = 21,616,726.45
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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.