Finding the Fourth Proportional to 20,421,882.42, 28,182,197.30 and 11,254,525.17
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Solution
The fourth proportional to 20,421,882.42, 28,182,197.30 and 11,254,525.17 is: 15,531,244.49
Step by Step Solution
- Step 1: Write the proportion equation
20,421,882.42 : 28,182,197.30 = 11,254,525.17 : x - Step 2: Convert to fraction form
20,421,882.42/28,182,197.30 = 11,254,525.17/x - Step 3: Cross multiply
20,421,882.42x = 28,182,197.30 × 11,254,525.17 - Step 4: Simplify right side
20,421,882.42x = 317,177,248,858,756.06 - Step 5: Solve for x
x = 317,177,248,858,756.06/20,421,882.42 - Step 6: Final answer
x = 15,531,244.49
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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.