Finding the Fourth Proportional to 21,347,273.42, 29,458,880.06 and 11,557,638.14
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Solution
The fourth proportional to 21,347,273.42, 29,458,880.06 and 11,557,638.14 is: 15,949,347.21
Step by Step Solution
- Step 1: Write the proportion equation
21,347,273.42 : 29,458,880.06 = 11,557,638.14 : x - Step 2: Convert to fraction form
21,347,273.42/29,458,880.06 = 11,557,638.14/x - Step 3: Cross multiply
21,347,273.42x = 29,458,880.06 × 11,557,638.14 - Step 4: Simplify right side
21,347,273.42x = 340,475,075,743,141.50 - Step 5: Solve for x
x = 340,475,075,743,141.50/21,347,273.42 - Step 6: Final answer
x = 15,949,347.21
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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.