Finding the Fourth Proportional to 21,319,023.92, 29,420,341.04 and 11,529,467.90
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Solution
The fourth proportional to 21,319,023.92, 29,420,341.04 and 11,529,467.90 is: 15,910,713.30
Step by Step Solution
- Step 1: Write the proportion equation
21,319,023.92 : 29,420,341.04 = 11,529,467.90 : x - Step 2: Convert to fraction form
21,319,023.92/29,420,341.04 = 11,529,467.90/x - Step 3: Cross multiply
21,319,023.92x = 29,420,341.04 × 11,529,467.90 - Step 4: Simplify right side
21,319,023.92x = 339,200,877,422,983.56 - Step 5: Solve for x
x = 339,200,877,422,983.56/21,319,023.92 - Step 6: Final answer
x = 15,910,713.30
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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.