Finding the Fourth Proportional to 21,317,971.80, 29,428,408.38 and 13,593,397.08
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Solution
The fourth proportional to 21,317,971.80, 29,428,408.38 and 13,593,397.08 is: 18,765,014.06
Step by Step Solution
- Step 1: Write the proportion equation
21,317,971.80 : 29,428,408.38 = 13,593,397.08 : x - Step 2: Convert to fraction form
21,317,971.80/29,428,408.38 = 13,593,397.08/x - Step 3: Cross multiply
21,317,971.80x = 29,428,408.38 × 13,593,397.08 - Step 4: Simplify right side
21,317,971.80x = 400,032,040,541,739.50 - Step 5: Solve for x
x = 400,032,040,541,739.50/21,317,971.80 - Step 6: Final answer
x = 18,765,014.06
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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.