Finding the Fourth Proportional to 19,675,238.20, 29,512,857.30 and 15,565,427.80
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Solution
The fourth proportional to 19,675,238.20, 29,512,857.30 and 15,565,427.80 is: 23,348,141.70
Step by Step Solution
- Step 1: Write the proportion equation
19,675,238.20 : 29,512,857.30 = 15,565,427.80 : x - Step 2: Convert to fraction form
19,675,238.20/29,512,857.30 = 15,565,427.80/x - Step 3: Cross multiply
19,675,238.20x = 29,512,857.30 × 15,565,427.80 - Step 4: Simplify right side
19,675,238.20x = 459,380,249,474,853 - Step 5: Solve for x
x = 459,380,249,474,853/19,675,238.20 - Step 6: Final answer
x = 23,348,141.70
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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.