Finding the Fourth Proportional to 28,868,810.18, 39,838,626.08 and 15,637,734.58
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Solution
The fourth proportional to 28,868,810.18, 39,838,626.08 and 15,637,734.58 is: 21,579,893.90
Step by Step Solution
- Step 1: Write the proportion equation
28,868,810.18 : 39,838,626.08 = 15,637,734.58 : x - Step 2: Convert to fraction form
28,868,810.18/39,838,626.08 = 15,637,734.58/x - Step 3: Cross multiply
28,868,810.18x = 39,838,626.08 × 15,637,734.58 - Step 4: Simplify right side
28,868,810.18x = 622,985,860,492,431.12 - Step 5: Solve for x
x = 622,985,860,492,431.12/28,868,810.18 - Step 6: Final answer
x = 21,579,893.90
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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.