Finding the Fourth Proportional to 20,780,907.20, 31,174,772.64 and 6,403,977.44
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Solution
The fourth proportional to 20,780,907.20, 31,174,772.64 and 6,403,977.44 is: 9,607,017.57
Step by Step Solution
- Step 1: Write the proportion equation
20,780,907.20 : 31,174,772.64 = 6,403,977.44 : x - Step 2: Convert to fraction form
20,780,907.20/31,174,772.64 = 6,403,977.44/x - Step 3: Cross multiply
20,780,907.20x = 31,174,772.64 × 6,403,977.44 - Step 4: Simplify right side
20,780,907.20x = 199,642,540,683,689.25 - Step 5: Solve for x
x = 199,642,540,683,689.25/20,780,907.20 - Step 6: Final answer
x = 9,607,017.57
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.