Finding the Fourth Proportional to 13,638,966.48, 18,821,506.68 and 7,444,057.68
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Solution
The fourth proportional to 13,638,966.48, 18,821,506.68 and 7,444,057.68 is: 10,272,653.84
Step by Step Solution
- Step 1: Write the proportion equation
13,638,966.48 : 18,821,506.68 = 7,444,057.68 : x - Step 2: Convert to fraction form
13,638,966.48/18,821,506.68 = 7,444,057.68/x - Step 3: Cross multiply
13,638,966.48x = 18,821,506.68 × 7,444,057.68 - Step 4: Simplify right side
13,638,966.48x = 140,108,381,350,425.30 - Step 5: Solve for x
x = 140,108,381,350,425.30/13,638,966.48 - Step 6: Final answer
x = 10,272,653.84
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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.