Finding the Fourth Proportional to 18,907,731.63, 28,368,745.25 and 7,401,422.21
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Solution
The fourth proportional to 18,907,731.63, 28,368,745.25 and 7,401,422.21 is: 11,104,931.31
Step by Step Solution
- Step 1: Write the proportion equation
18,907,731.63 : 28,368,745.25 = 7,401,422.21 : x - Step 2: Convert to fraction form
18,907,731.63/28,368,745.25 = 7,401,422.21/x - Step 3: Cross multiply
18,907,731.63x = 28,368,745.25 × 7,401,422.21 - Step 4: Simplify right side
18,907,731.63x = 209,969,060,984,331.19 - Step 5: Solve for x
x = 209,969,060,984,331.19/18,907,731.63 - Step 6: Final answer
x = 11,104,931.31
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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.