Finding the Fourth Proportional to 13,555,943.08, 18,702,525.12 and 8,664,028.68
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Solution
The fourth proportional to 13,555,943.08, 18,702,525.12 and 8,664,028.68 is: 11,953,370.79
Step by Step Solution
- Step 1: Write the proportion equation
13,555,943.08 : 18,702,525.12 = 8,664,028.68 : x - Step 2: Convert to fraction form
13,555,943.08/18,702,525.12 = 8,664,028.68/x - Step 3: Cross multiply
13,555,943.08x = 18,702,525.12 × 8,664,028.68 - Step 4: Simplify right side
13,555,943.08x = 162,039,214,028,100.44 - Step 5: Solve for x
x = 162,039,214,028,100.44/13,555,943.08 - Step 6: Final answer
x = 11,953,370.79
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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.