Finding the Fourth Proportional to 21,209,284.48, 31,784,268.56 and 11,472,877.12
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Solution
The fourth proportional to 21,209,284.48, 31,784,268.56 and 11,472,877.12 is: 17,193,272.50
Step by Step Solution
- Step 1: Write the proportion equation
21,209,284.48 : 31,784,268.56 = 11,472,877.12 : x - Step 2: Convert to fraction form
21,209,284.48/31,784,268.56 = 11,472,877.12/x - Step 3: Cross multiply
21,209,284.48x = 31,784,268.56 × 11,472,877.12 - Step 4: Simplify right side
21,209,284.48x = 364,657,007,537,959.31 - Step 5: Solve for x
x = 364,657,007,537,959.31/21,209,284.48 - Step 6: Final answer
x = 17,193,272.50
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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.