Finding the Fourth Proportional to 13,319,278.07, 18,380,603.76 and 7,207,706.57
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Solution
The fourth proportional to 13,319,278.07, 18,380,603.76 and 7,207,706.57 is: 9,946,635.08
Step by Step Solution
- Step 1: Write the proportion equation
13,319,278.07 : 18,380,603.76 = 7,207,706.57 : x - Step 2: Convert to fraction form
13,319,278.07/18,380,603.76 = 7,207,706.57/x - Step 3: Cross multiply
13,319,278.07x = 18,380,603.76 × 7,207,706.57 - Step 4: Simplify right side
13,319,278.07x = 132,481,998,481,518.72 - Step 5: Solve for x
x = 132,481,998,481,518.72/13,319,278.07 - Step 6: Final answer
x = 9,946,635.08
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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.