Finding the Fourth Proportional to 12,576,871.60, 18,821,761.80 and 7,531,802.80
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Solution
The fourth proportional to 12,576,871.60, 18,821,761.80 and 7,531,802.80 is: 11,271,626.42
Step by Step Solution
- Step 1: Write the proportion equation
12,576,871.60 : 18,821,761.80 = 7,531,802.80 : x - Step 2: Convert to fraction form
12,576,871.60/18,821,761.80 = 7,531,802.80/x - Step 3: Cross multiply
12,576,871.60x = 18,821,761.80 × 7,531,802.80 - Step 4: Simplify right side
12,576,871.60x = 141,761,798,226,173.03 - Step 5: Solve for x
x = 141,761,798,226,173.03/12,576,871.60 - Step 6: Final answer
x = 11,271,626.42
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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.