Finding the Fourth Proportional to 13,621,839.62, 20,444,564.84 and 7,149,486.82
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Solution
The fourth proportional to 13,621,839.62, 20,444,564.84 and 7,149,486.82 is: 10,730,426.36
Step by Step Solution
- Step 1: Write the proportion equation
13,621,839.62 : 20,444,564.84 = 7,149,486.82 : x - Step 2: Convert to fraction form
13,621,839.62/20,444,564.84 = 7,149,486.82/x - Step 3: Cross multiply
13,621,839.62x = 20,444,564.84 × 7,149,486.82 - Step 4: Simplify right side
13,621,839.62x = 146,168,146,864,215.41 - Step 5: Solve for x
x = 146,168,146,864,215.41/13,621,839.62 - Step 6: Final answer
x = 10,730,426.36
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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.