Finding the Fourth Proportional to 18,964,315.38, 26,167,939.89 and 11,518,102.53
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Solution
The fourth proportional to 18,964,315.38, 26,167,939.89 and 11,518,102.53 is: 15,893,271.58
Step by Step Solution
- Step 1: Write the proportion equation
18,964,315.38 : 26,167,939.89 = 11,518,102.53 : x - Step 2: Convert to fraction form
18,964,315.38/26,167,939.89 = 11,518,102.53/x - Step 3: Cross multiply
18,964,315.38x = 26,167,939.89 × 11,518,102.53 - Step 4: Simplify right side
18,964,315.38x = 301,405,014,651,896.94 - Step 5: Solve for x
x = 301,405,014,651,896.94/18,964,315.38 - Step 6: Final answer
x = 15,893,271.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.