Finding the Fourth Proportional to 20,290,830.12, 30,446,207.10 and 8,159,803.56
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Solution
The fourth proportional to 20,290,830.12, 30,446,207.10 and 8,159,803.56 is: 12,243,711.45
Step by Step Solution
- Step 1: Write the proportion equation
20,290,830.12 : 30,446,207.10 = 8,159,803.56 : x - Step 2: Convert to fraction form
20,290,830.12/30,446,207.10 = 8,159,803.56/x - Step 3: Cross multiply
20,290,830.12x = 30,446,207.10 × 8,159,803.56 - Step 4: Simplify right side
20,290,830.12x = 248,435,069,083,077.28 - Step 5: Solve for x
x = 248,435,069,083,077.28/20,290,830.12 - Step 6: Final answer
x = 12,243,711.45
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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.