Finding the Fourth Proportional to 19,920,664.81, 27,489,791.67 and 11,099,660.32
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Solution
The fourth proportional to 19,920,664.81, 27,489,791.67 and 11,099,660.32 is: 15,317,126.85
Step by Step Solution
- Step 1: Write the proportion equation
19,920,664.81 : 27,489,791.67 = 11,099,660.32 : x - Step 2: Convert to fraction form
19,920,664.81/27,489,791.67 = 11,099,660.32/x - Step 3: Cross multiply
19,920,664.81x = 27,489,791.67 × 11,099,660.32 - Step 4: Simplify right side
19,920,664.81x = 305,127,349,749,067.25 - Step 5: Solve for x
x = 305,127,349,749,067.25/19,920,664.81 - Step 6: Final answer
x = 15,317,126.85
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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.