Finding the Fourth Proportional to 21,987,776.07, 30,330,524.34 and 13,713,473.21
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Solution
The fourth proportional to 21,987,776.07, 30,330,524.34 and 13,713,473.21 is: 18,916,730.44
Step by Step Solution
- Step 1: Write the proportion equation
21,987,776.07 : 30,330,524.34 = 13,713,473.21 : x - Step 2: Convert to fraction form
21,987,776.07/30,330,524.34 = 13,713,473.21/x - Step 3: Cross multiply
21,987,776.07x = 30,330,524.34 × 13,713,473.21 - Step 4: Simplify right side
21,987,776.07x = 415,936,832,830,190.31 - Step 5: Solve for x
x = 415,936,832,830,190.31/21,987,776.07 - Step 6: Final answer
x = 18,916,730.44
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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.