Finding the Fourth Proportional to 28,733,157.92, 39,651,747.51 and 15,680,416.84
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Solution
The fourth proportional to 28,733,157.92, 39,651,747.51 and 15,680,416.84 is: 21,638,969.55
Step by Step Solution
- Step 1: Write the proportion equation
28,733,157.92 : 39,651,747.51 = 15,680,416.84 : x - Step 2: Convert to fraction form
28,733,157.92/39,651,747.51 = 15,680,416.84/x - Step 3: Cross multiply
28,733,157.92x = 39,651,747.51 × 15,680,416.84 - Step 4: Simplify right side
28,733,157.92x = 621,755,929,269,989.62 - Step 5: Solve for x
x = 621,755,929,269,989.62/28,733,157.92 - Step 6: Final answer
x = 21,638,969.55
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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.