Finding the Fourth Proportional to 18,878,359.38, 28,317,540.36 and 7,526,779.62
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Solution
The fourth proportional to 18,878,359.38, 28,317,540.36 and 7,526,779.62 is: 11,290,169.94
Step by Step Solution
- Step 1: Write the proportion equation
18,878,359.38 : 28,317,540.36 = 7,526,779.62 : x - Step 2: Convert to fraction form
18,878,359.38/28,317,540.36 = 7,526,779.62/x - Step 3: Cross multiply
18,878,359.38x = 28,317,540.36 × 7,526,779.62 - Step 4: Simplify right side
18,878,359.38x = 213,139,885,670,175.47 - Step 5: Solve for x
x = 213,139,885,670,175.47/18,878,359.38 - Step 6: Final answer
x = 11,290,169.94
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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.