Finding the Fourth Proportional to 13,188,139.68, 18,199,631.08 and 8,031,499.84
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Solution
The fourth proportional to 13,188,139.68, 18,199,631.08 and 8,031,499.84 is: 11,083,468.76
Step by Step Solution
- Step 1: Write the proportion equation
13,188,139.68 : 18,199,631.08 = 8,031,499.84 : x - Step 2: Convert to fraction form
13,188,139.68/18,199,631.08 = 8,031,499.84/x - Step 3: Cross multiply
13,188,139.68x = 18,199,631.08 × 8,031,499.84 - Step 4: Simplify right side
13,188,139.68x = 146,170,334,107,079 - Step 5: Solve for x
x = 146,170,334,107,079/13,188,139.68 - Step 6: Final answer
x = 11,083,468.76
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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.