Finding the Fourth Proportional to 13,842,487.70, 20,763,731.55 and 6,652,287.80
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Solution
The fourth proportional to 13,842,487.70, 20,763,731.55 and 6,652,287.80 is: 9,978,431.70
Step by Step Solution
- Step 1: Write the proportion equation
13,842,487.70 : 20,763,731.55 = 6,652,287.80 : x - Step 2: Convert to fraction form
13,842,487.70/20,763,731.55 = 6,652,287.80/x - Step 3: Cross multiply
13,842,487.70x = 20,763,731.55 × 6,652,287.80 - Step 4: Simplify right side
13,842,487.70x = 138,126,318,072,540.09 - Step 5: Solve for x
x = 138,126,318,072,540.09/13,842,487.70 - Step 6: Final answer
x = 9,978,431.70
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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.