Finding the Fourth Proportional to 28,840,129.18, 39,799,375.31 and 15,787,396.94
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Solution
The fourth proportional to 28,840,129.18, 39,799,375.31 and 15,787,396.94 is: 21,786,606.15
Step by Step Solution
- Step 1: Write the proportion equation
28,840,129.18 : 39,799,375.31 = 15,787,396.94 : x - Step 2: Convert to fraction form
28,840,129.18/39,799,375.31 = 15,787,396.94/x - Step 3: Cross multiply
28,840,129.18x = 39,799,375.31 × 15,787,396.94 - Step 4: Simplify right side
28,840,129.18x = 628,328,535,823,477.25 - Step 5: Solve for x
x = 628,328,535,823,477.25/28,840,129.18 - Step 6: Final answer
x = 21,786,606.15
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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.