Finding the Fourth Proportional to 21,339,581.36, 29,448,620.20 and 11,550,023.92
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Solution
The fourth proportional to 21,339,581.36, 29,448,620.20 and 11,550,023.92 is: 15,939,031.89
Step by Step Solution
- Step 1: Write the proportion equation
21,339,581.36 : 29,448,620.20 = 11,550,023.92 : x - Step 2: Convert to fraction form
21,339,581.36/29,448,620.20 = 11,550,023.92/x - Step 3: Cross multiply
21,339,581.36x = 29,448,620.20 × 11,550,023.92 - Step 4: Simplify right side
21,339,581.36x = 340,132,267,720,995.19 - Step 5: Solve for x
x = 340,132,267,720,995.19/21,339,581.36 - Step 6: Final answer
x = 15,939,031.89
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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.