Finding the Fourth Proportional to 10,988,398.08, 15,158,872.80 and 7,122,170.88
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Solution
The fourth proportional to 10,988,398.08, 15,158,872.80 and 7,122,170.88 is: 9,825,279.50
Step by Step Solution
- Step 1: Write the proportion equation
10,988,398.08 : 15,158,872.80 = 7,122,170.88 : x - Step 2: Convert to fraction form
10,988,398.08/15,158,872.80 = 7,122,170.88/x - Step 3: Cross multiply
10,988,398.08x = 15,158,872.80 × 7,122,170.88 - Step 4: Simplify right side
10,988,398.08x = 107,964,082,429,784.06 - Step 5: Solve for x
x = 107,964,082,429,784.06/10,988,398.08 - Step 6: Final answer
x = 9,825,279.50
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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.