Finding the Fourth Proportional to 20,668,464.18, 31,002,779.84 and 8,372,660.09
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Solution
The fourth proportional to 20,668,464.18, 31,002,779.84 and 8,372,660.09 is: 12,559,023.98
Step by Step Solution
- Step 1: Write the proportion equation
20,668,464.18 : 31,002,779.84 = 8,372,660.09 : x - Step 2: Convert to fraction form
20,668,464.18/31,002,779.84 = 8,372,660.09/x - Step 3: Cross multiply
20,668,464.18x = 31,002,779.84 × 8,372,660.09 - Step 4: Simplify right side
20,668,464.18x = 259,575,737,248,547.41 - Step 5: Solve for x
x = 259,575,737,248,547.41/20,668,464.18 - Step 6: Final answer
x = 12,559,023.98
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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.