Finding the Fourth Proportional to 18,927,030.78, 28,449,814.20 and 12,491,466.84
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Solution
The fourth proportional to 18,927,030.78, 28,449,814.20 and 12,491,466.84 is: 18,776,315.99
Step by Step Solution
- Step 1: Write the proportion equation
18,927,030.78 : 28,449,814.20 = 12,491,466.84 : x - Step 2: Convert to fraction form
18,927,030.78/28,449,814.20 = 12,491,466.84/x - Step 3: Cross multiply
18,927,030.78x = 28,449,814.20 × 12,491,466.84 - Step 4: Simplify right side
18,927,030.78x = 355,379,910,683,461.12 - Step 5: Solve for x
x = 355,379,910,683,461.12/18,927,030.78 - Step 6: Final answer
x = 18,776,315.99
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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.