Finding the Fourth Proportional to 13,698,575.21, 18,903,802.09 and 7,586,872.49
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Solution
The fourth proportional to 13,698,575.21, 18,903,802.09 and 7,586,872.49 is: 10,469,755.71
Step by Step Solution
- Step 1: Write the proportion equation
13,698,575.21 : 18,903,802.09 = 7,586,872.49 : x - Step 2: Convert to fraction form
13,698,575.21/18,903,802.09 = 7,586,872.49/x - Step 3: Cross multiply
13,698,575.21x = 18,903,802.09 × 7,586,872.49 - Step 4: Simplify right side
13,698,575.21x = 143,420,735,938,506.50 - Step 5: Solve for x
x = 143,420,735,938,506.50/13,698,575.21 - Step 6: Final answer
x = 10,469,755.71
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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.