Finding the Fourth Proportional to 13,761,814.05, 18,989,177.58 and 7,961,135.58
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Solution
The fourth proportional to 13,761,814.05, 18,989,177.58 and 7,961,135.58 is: 10,985,137.33
Step by Step Solution
- Step 1: Write the proportion equation
13,761,814.05 : 18,989,177.58 = 7,961,135.58 : x - Step 2: Convert to fraction form
13,761,814.05/18,989,177.58 = 7,961,135.58/x - Step 3: Cross multiply
13,761,814.05x = 18,989,177.58 × 7,961,135.58 - Step 4: Simplify right side
13,761,814.05x = 151,175,417,267,076.28 - Step 5: Solve for x
x = 151,175,417,267,076.28/13,761,814.05 - Step 6: Final answer
x = 10,985,137.33
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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.