Finding the Fourth Proportional to 18,757,873.52, 28,136,766.54 and 12,321,576.26
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Solution
The fourth proportional to 18,757,873.52, 28,136,766.54 and 12,321,576.26 is: 18,482,335.66
Step by Step Solution
- Step 1: Write the proportion equation
18,757,873.52 : 28,136,766.54 = 12,321,576.26 : x - Step 2: Convert to fraction form
18,757,873.52/28,136,766.54 = 12,321,576.26/x - Step 3: Cross multiply
18,757,873.52x = 28,136,766.54 × 12,321,576.26 - Step 4: Simplify right side
18,757,873.52x = 346,689,314,632,426.31 - Step 5: Solve for x
x = 346,689,314,632,426.31/18,757,873.52 - Step 6: Final answer
x = 18,482,335.66
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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.