Finding the Fourth Proportional to 21,438,968.47, 29,585,712.08 and 11,649,442.53
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Solution
The fourth proportional to 21,438,968.47, 29,585,712.08 and 11,649,442.53 is: 16,076,195.69
Step by Step Solution
- Step 1: Write the proportion equation
21,438,968.47 : 29,585,712.08 = 11,649,442.53 : x - Step 2: Convert to fraction form
21,438,968.47/29,585,712.08 = 11,649,442.53/x - Step 3: Cross multiply
21,438,968.47x = 29,585,712.08 × 11,649,442.53 - Step 4: Simplify right side
21,438,968.47x = 344,657,052,575,104.62 - Step 5: Solve for x
x = 344,657,052,575,104.62/21,438,968.47 - Step 6: Final answer
x = 16,076,195.69
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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.