Finding the Fourth Proportional to 13,286,754.06, 18,335,720.70 and 7,175,182.56
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Solution
The fourth proportional to 13,286,754.06, 18,335,720.70 and 7,175,182.56 is: 9,901,751.99
Step by Step Solution
- Step 1: Write the proportion equation
13,286,754.06 : 18,335,720.70 = 7,175,182.56 : x - Step 2: Convert to fraction form
13,286,754.06/18,335,720.70 = 7,175,182.56/x - Step 3: Cross multiply
13,286,754.06x = 18,335,720.70 × 7,175,182.56 - Step 4: Simplify right side
13,286,754.06x = 131,562,143,391,670.98 - Step 5: Solve for x
x = 131,562,143,391,670.98/13,286,754.06 - Step 6: Final answer
x = 9,901,751.99
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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.