Finding the Fourth Proportional to 20,755,512.06, 31,106,263.41 and 8,445,128.95
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Solution
The fourth proportional to 20,755,512.06, 31,106,263.41 and 8,445,128.95 is: 12,656,705.60
Step by Step Solution
- Step 1: Write the proportion equation
20,755,512.06 : 31,106,263.41 = 8,445,128.95 : x - Step 2: Convert to fraction form
20,755,512.06/31,106,263.41 = 8,445,128.95/x - Step 3: Cross multiply
20,755,512.06x = 31,106,263.41 × 8,445,128.95 - Step 4: Simplify right side
20,755,512.06x = 262,696,405,688,999.56 - Step 5: Solve for x
x = 262,696,405,688,999.56/20,755,512.06 - Step 6: Final answer
x = 12,656,705.60
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.