Finding the Fourth Proportional to 13,786,431.30, 19,012,889.97 and 8,630,262.90
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Solution
The fourth proportional to 13,786,431.30, 19,012,889.97 and 8,630,262.90 is: 11,902,009.69
Step by Step Solution
- Step 1: Write the proportion equation
13,786,431.30 : 19,012,889.97 = 8,630,262.90 : x - Step 2: Convert to fraction form
13,786,431.30/19,012,889.97 = 8,630,262.90/x - Step 3: Cross multiply
13,786,431.30x = 19,012,889.97 × 8,630,262.90 - Step 4: Simplify right side
13,786,431.30x = 164,086,238,929,873.12 - Step 5: Solve for x
x = 164,086,238,929,873.12/13,786,431.30 - Step 6: Final answer
x = 11,902,009.69
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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.