Finding the Fourth Proportional to 28,108,961.37, 38,789,638.10 and 15,550,479.99
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Solution
The fourth proportional to 28,108,961.37, 38,789,638.10 and 15,550,479.99 is: 21,459,259.31
Step by Step Solution
- Step 1: Write the proportion equation
28,108,961.37 : 38,789,638.10 = 15,550,479.99 : x - Step 2: Convert to fraction form
28,108,961.37/38,789,638.10 = 15,550,479.99/x - Step 3: Cross multiply
28,108,961.37x = 38,789,638.10 × 15,550,479.99 - Step 4: Simplify right side
28,108,961.37x = 603,197,491,093,391.62 - Step 5: Solve for x
x = 603,197,491,093,391.62/28,108,961.37 - Step 6: Final answer
x = 21,459,259.31
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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.