Finding the Fourth Proportional to 28,086,378.56, 38,760,399.42 and 15,696,471.62
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Solution
The fourth proportional to 28,086,378.56, 38,760,399.42 and 15,696,471.62 is: 21,661,799.80
Step by Step Solution
- Step 1: Write the proportion equation
28,086,378.56 : 38,760,399.42 = 15,696,471.62 : x - Step 2: Convert to fraction form
28,086,378.56/38,760,399.42 = 15,696,471.62/x - Step 3: Cross multiply
28,086,378.56x = 38,760,399.42 × 15,696,471.62 - Step 4: Simplify right side
28,086,378.56x = 608,401,509,537,370.62 - Step 5: Solve for x
x = 608,401,509,537,370.62/28,086,378.56 - Step 6: Final answer
x = 21,661,799.80
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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.