Finding the Fourth Proportional to 15,520,640.75, 21,418,967.75 and 8,906,440.37
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Solution
The fourth proportional to 15,520,640.75, 21,418,967.75 and 8,906,440.37 is: 12,291,165.17
Step by Step Solution
- Step 1: Write the proportion equation
15,520,640.75 : 21,418,967.75 = 8,906,440.37 : x - Step 2: Convert to fraction form
15,520,640.75/21,418,967.75 = 8,906,440.37/x - Step 3: Cross multiply
15,520,640.75x = 21,418,967.75 × 8,906,440.37 - Step 4: Simplify right side
15,520,640.75x = 190,766,759,021,182.75 - Step 5: Solve for x
x = 190,766,759,021,182.75/15,520,640.75 - Step 6: Final answer
x = 12,291,165.17
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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.