Finding the Fourth Proportional to 12,080,802.80, 18,121,204.20 and 11,520,930.80
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Solution
The fourth proportional to 12,080,802.80, 18,121,204.20 and 11,520,930.80 is: 17,281,396.20
Step by Step Solution
- Step 1: Write the proportion equation
12,080,802.80 : 18,121,204.20 = 11,520,930.80 : x - Step 2: Convert to fraction form
12,080,802.80/18,121,204.20 = 11,520,930.80/x - Step 3: Cross multiply
12,080,802.80x = 18,121,204.20 × 11,520,930.80 - Step 4: Simplify right side
12,080,802.80x = 208,773,139,600,869.38 - Step 5: Solve for x
x = 208,773,139,600,869.38/12,080,802.80 - Step 6: Final answer
x = 17,281,396.20
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1.5x scale
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.