Finding the Fourth Proportional to 28,316,042.88, 39,074,895.36 and 15,927,169.92
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Solution
The fourth proportional to 28,316,042.88, 39,074,895.36 and 15,927,169.92 is: 21,978,794.87
Step by Step Solution
- Step 1: Write the proportion equation
28,316,042.88 : 39,074,895.36 = 15,927,169.92 : x - Step 2: Convert to fraction form
28,316,042.88/39,074,895.36 = 15,927,169.92/x - Step 3: Cross multiply
28,316,042.88x = 39,074,895.36 × 15,927,169.92 - Step 4: Simplify right side
28,316,042.88x = 622,352,498,004,939.50 - Step 5: Solve for x
x = 622,352,498,004,939.50/28,316,042.88 - Step 6: Final answer
x = 21,978,794.87
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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.