Finding the Fourth Proportional to 22,791,274.12, 31,451,943.84 and 12,477,994.48
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Solution
The fourth proportional to 22,791,274.12, 31,451,943.84 and 12,477,994.48 is: 17,219,624.47
Step by Step Solution
- Step 1: Write the proportion equation
22,791,274.12 : 31,451,943.84 = 12,477,994.48 : x - Step 2: Convert to fraction form
22,791,274.12/31,451,943.84 = 12,477,994.48/x - Step 3: Cross multiply
22,791,274.12x = 31,451,943.84 × 12,477,994.48 - Step 4: Simplify right side
22,791,274.12x = 392,457,181,620,790 - Step 5: Solve for x
x = 392,457,181,620,790/22,791,274.12 - Step 6: Final answer
x = 17,219,624.47
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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.