Finding the Fourth Proportional to 13,122,249.12, 18,109,228.70 and 7,321,537.80
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Solution
The fourth proportional to 13,122,249.12, 18,109,228.70 and 7,321,537.80 is: 10,104,015.04
Step by Step Solution
- Step 1: Write the proportion equation
13,122,249.12 : 18,109,228.70 = 7,321,537.80 : x - Step 2: Convert to fraction form
13,122,249.12/18,109,228.70 = 7,321,537.80/x - Step 3: Cross multiply
13,122,249.12x = 18,109,228.70 × 7,321,537.80 - Step 4: Simplify right side
13,122,249.12x = 132,587,402,455,894.84 - Step 5: Solve for x
x = 132,587,402,455,894.84/13,122,249.12 - Step 6: Final answer
x = 10,104,015.04
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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.