Finding the Fourth Proportional to 20,755,521.09, 31,106,276.97 and 8,445,137.98
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Solution
The fourth proportional to 20,755,521.09, 31,106,276.97 and 8,445,137.98 is: 12,656,719.14
Step by Step Solution
- Step 1: Write the proportion equation
20,755,521.09 : 31,106,276.97 = 8,445,137.98 : x - Step 2: Convert to fraction form
20,755,521.09/31,106,276.97 = 8,445,137.98/x - Step 3: Cross multiply
20,755,521.09x = 31,106,276.97 × 8,445,137.98 - Step 4: Simplify right side
20,755,521.09x = 262,696,801,055,746.31 - Step 5: Solve for x
x = 262,696,801,055,746.31/20,755,521.09 - Step 6: Final answer
x = 12,656,719.14
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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.