Finding the Fourth Proportional to 28,542,486.04, 39,388,919.10 and 15,489,857.68
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Solution
The fourth proportional to 28,542,486.04, 39,388,919.10 and 15,489,857.68 is: 21,376,160.09
Step by Step Solution
- Step 1: Write the proportion equation
28,542,486.04 : 39,388,919.10 = 15,489,857.68 : x - Step 2: Convert to fraction form
28,542,486.04/39,388,919.10 = 15,489,857.68/x - Step 3: Cross multiply
28,542,486.04x = 39,388,919.10 × 15,489,857.68 - Step 4: Simplify right side
28,542,486.04x = 610,128,751,028,033.75 - Step 5: Solve for x
x = 610,128,751,028,033.75/28,542,486.04 - Step 6: Final answer
x = 21,376,160.09
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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.