Finding the Fourth Proportional to 18,590,879.43, 25,658,457.62 and 15,488,483.31
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Solution
The fourth proportional to 18,590,879.43, 25,658,457.62 and 15,488,483.31 is: 21,376,642.99
Step by Step Solution
- Step 1: Write the proportion equation
18,590,879.43 : 25,658,457.62 = 15,488,483.31 : x - Step 2: Convert to fraction form
18,590,879.43/25,658,457.62 = 15,488,483.31/x - Step 3: Cross multiply
18,590,879.43x = 25,658,457.62 × 15,488,483.31 - Step 4: Simplify right side
18,590,879.43x = 397,410,592,530,269.88 - Step 5: Solve for x
x = 397,410,592,530,269.88/18,590,879.43 - Step 6: Final answer
x = 21,376,642.99
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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.