Finding the Fourth Proportional to 20,753,735.18, 28,640,607.74 and 11,461,286.31
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Solution
The fourth proportional to 20,753,735.18, 28,640,607.74 and 11,461,286.31 is: 15,816,825.38
Step by Step Solution
- Step 1: Write the proportion equation
20,753,735.18 : 28,640,607.74 = 11,461,286.31 : x - Step 2: Convert to fraction form
20,753,735.18/28,640,607.74 = 11,461,286.31/x - Step 3: Cross multiply
20,753,735.18x = 28,640,607.74 × 11,461,286.31 - Step 4: Simplify right side
20,753,735.18x = 328,258,205,343,235.62 - Step 5: Solve for x
x = 328,258,205,343,235.62/20,753,735.18 - Step 6: Final answer
x = 15,816,825.38
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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.