Finding the Fourth Proportional to 28,280,254.09, 39,026,736.21 and 15,890,396.08
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Solution
The fourth proportional to 28,280,254.09, 39,026,736.21 and 15,890,396.08 is: 21,928,738.48
Step by Step Solution
- Step 1: Write the proportion equation
28,280,254.09 : 39,026,736.21 = 15,890,396.08 : x - Step 2: Convert to fraction form
28,280,254.09/39,026,736.21 = 15,890,396.08/x - Step 3: Cross multiply
28,280,254.09x = 39,026,736.21 × 15,890,396.08 - Step 4: Simplify right side
28,280,254.09x = 620,150,296,086,578.12 - Step 5: Solve for x
x = 620,150,296,086,578.12/28,280,254.09 - Step 6: Final answer
x = 21,928,738.48
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1.5x scale
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.