Finding the Fourth Proportional to 13,286,952.10, 18,335,993.79 and 7,175,380.06
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Solution
The fourth proportional to 13,286,952.10, 18,335,993.79 and 7,175,380.06 is: 9,902,024.42
Step by Step Solution
- Step 1: Write the proportion equation
13,286,952.10 : 18,335,993.79 = 7,175,380.06 : x - Step 2: Convert to fraction form
13,286,952.10/18,335,993.79 = 7,175,380.06/x - Step 3: Cross multiply
13,286,952.10x = 18,335,993.79 × 7,175,380.06 - Step 4: Simplify right side
13,286,952.10x = 131,567,724,221,049.81 - Step 5: Solve for x
x = 131,567,724,221,049.81/13,286,952.10 - Step 6: Final answer
x = 9,902,024.42
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1.5x scale
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.