Finding the Fourth Proportional to 13,319,261.25, 18,380,580.54 and 7,207,689.75
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Solution
The fourth proportional to 13,319,261.25, 18,380,580.54 and 7,207,689.75 is: 9,946,611.86
Step by Step Solution
- Step 1: Write the proportion equation
13,319,261.25 : 18,380,580.54 = 7,207,689.75 : x - Step 2: Convert to fraction form
13,319,261.25/18,380,580.54 = 7,207,689.75/x - Step 3: Cross multiply
13,319,261.25x = 18,380,580.54 × 7,207,689.75 - Step 4: Simplify right side
13,319,261.25x = 132,481,521,957,207.45 - Step 5: Solve for x
x = 132,481,521,957,207.45/13,319,261.25 - Step 6: Final answer
x = 9,946,611.86
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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.