Finding the Fourth Proportional to 21,030,397.98, 29,021,937.03 and 11,372,605.98
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Solution
The fourth proportional to 21,030,397.98, 29,021,937.03 and 11,372,605.98 is: 15,694,189.66
Step by Step Solution
- Step 1: Write the proportion equation
21,030,397.98 : 29,021,937.03 = 11,372,605.98 : x - Step 2: Convert to fraction form
21,030,397.98/29,021,937.03 = 11,372,605.98/x - Step 3: Cross multiply
21,030,397.98x = 29,021,937.03 × 11,372,605.98 - Step 4: Simplify right side
21,030,397.98x = 330,055,054,618,561.44 - Step 5: Solve for x
x = 330,055,054,618,561.44/21,030,397.98 - Step 6: Final answer
x = 15,694,189.66
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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.