Finding the Fourth Proportional to 21,334,931.37, 29,442,205.40 and 11,545,375.65
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Solution
The fourth proportional to 21,334,931.37, 29,442,205.40 and 11,545,375.65 is: 15,932,618.45
Step by Step Solution
- Step 1: Write the proportion equation
21,334,931.37 : 29,442,205.40 = 11,545,375.65 : x - Step 2: Convert to fraction form
21,334,931.37/29,442,205.40 = 11,545,375.65/x - Step 3: Cross multiply
21,334,931.37x = 29,442,205.40 × 11,545,375.65 - Step 4: Simplify right side
21,334,931.37x = 339,921,321,249,731.62 - Step 5: Solve for x
x = 339,921,321,249,731.62/21,334,931.37 - Step 6: Final answer
x = 15,932,618.45
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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.