Finding the Fourth Proportional to 27,887,820.30, 38,486,126.54 and 15,498,435.94
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Solution
The fourth proportional to 27,887,820.30, 38,486,126.54 and 15,498,435.94 is: 21,388,360.95
Step by Step Solution
- Step 1: Write the proportion equation
27,887,820.30 : 38,486,126.54 = 15,498,435.94 : x - Step 2: Convert to fraction form
27,887,820.30/38,486,126.54 = 15,498,435.94/x - Step 3: Cross multiply
27,887,820.30x = 38,486,126.54 × 15,498,435.94 - Step 4: Simplify right side
27,887,820.30x = 596,474,766,701,454.62 - Step 5: Solve for x
x = 596,474,766,701,454.62/27,887,820.30 - Step 6: Final answer
x = 21,388,360.95
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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.