Finding the Fourth Proportional to 21,171,468.96, 29,205,854.91 and 13,833,591.75
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Solution
The fourth proportional to 21,171,468.96, 29,205,854.91 and 13,833,591.75 is: 19,083,317.95
Step by Step Solution
- Step 1: Write the proportion equation
21,171,468.96 : 29,205,854.91 = 13,833,591.75 : x - Step 2: Convert to fraction form
21,171,468.96/29,205,854.91 = 13,833,591.75/x - Step 3: Cross multiply
21,171,468.96x = 29,205,854.91 × 13,833,591.75 - Step 4: Simplify right side
21,171,468.96x = 404,021,873,534,673 - Step 5: Solve for x
x = 404,021,873,534,673/21,171,468.96 - Step 6: Final answer
x = 19,083,317.95
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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.