Finding the Fourth Proportional to 13,438,239.12, 20,157,432.68 and 3,340,860.12
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Solution
The fourth proportional to 13,438,239.12, 20,157,432.68 and 3,340,860.12 is: 5,011,308.58
Step by Step Solution
- Step 1: Write the proportion equation
13,438,239.12 : 20,157,432.68 = 3,340,860.12 : x - Step 2: Convert to fraction form
13,438,239.12/20,157,432.68 = 3,340,860.12/x - Step 3: Cross multiply
13,438,239.12x = 20,157,432.68 × 3,340,860.12 - Step 4: Simplify right side
13,438,239.12x = 67,343,162,962,196.73 - Step 5: Solve for x
x = 67,343,162,962,196.73/13,438,239.12 - Step 6: Final answer
x = 5,011,308.58
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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.