Finding the Fourth Proportional to 20,878,996.14, 31,321,244.70 and 7,746,627.06
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Solution
The fourth proportional to 20,878,996.14, 31,321,244.70 and 7,746,627.06 is: 11,620,961.09
Step by Step Solution
- Step 1: Write the proportion equation
20,878,996.14 : 31,321,244.70 = 7,746,627.06 : x - Step 2: Convert to fraction form
20,878,996.14/31,321,244.70 = 7,746,627.06/x - Step 3: Cross multiply
20,878,996.14x = 31,321,244.70 × 7,746,627.06 - Step 4: Simplify right side
20,878,996.14x = 242,634,001,745,901.56 - Step 5: Solve for x
x = 242,634,001,745,901.56/20,878,996.14 - Step 6: Final answer
x = 11,620,961.09
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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.