Finding the Fourth Proportional to 21,896,884.60, 30,217,162.20 and 12,107,077.99
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Solution
The fourth proportional to 21,896,884.60, 30,217,162.20 and 12,107,077.99 is: 16,707,469.86
Step by Step Solution
- Step 1: Write the proportion equation
21,896,884.60 : 30,217,162.20 = 12,107,077.99 : x - Step 2: Convert to fraction form
21,896,884.60/30,217,162.20 = 12,107,077.99/x - Step 3: Cross multiply
21,896,884.60x = 30,217,162.20 × 12,107,077.99 - Step 4: Simplify right side
21,896,884.60x = 365,841,539,391,880 - Step 5: Solve for x
x = 365,841,539,391,880/21,896,884.60 - Step 6: Final answer
x = 16,707,469.86
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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.