Finding the Fourth Proportional to 28,139,585.65, 38,801,791.26 and 18,331,841.99
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Solution
The fourth proportional to 28,139,585.65, 38,801,791.26 and 18,331,841.99 is: 25,277,852.89
Step by Step Solution
- Step 1: Write the proportion equation
28,139,585.65 : 38,801,791.26 = 18,331,841.99 : x - Step 2: Convert to fraction form
28,139,585.65/38,801,791.26 = 18,331,841.99/x - Step 3: Cross multiply
28,139,585.65x = 38,801,791.26 × 18,331,841.99 - Step 4: Simplify right side
28,139,585.65x = 711,308,306,404,287.38 - Step 5: Solve for x
x = 711,308,306,404,287.38/28,139,585.65 - Step 6: Final answer
x = 25,277,852.89
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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.