Finding the Fourth Proportional to 13,149,617.40, 19,724,426.10 and 11,721,943.80
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Solution
The fourth proportional to 13,149,617.40, 19,724,426.10 and 11,721,943.80 is: 17,582,915.70
Step by Step Solution
- Step 1: Write the proportion equation
13,149,617.40 : 19,724,426.10 = 11,721,943.80 : x - Step 2: Convert to fraction form
13,149,617.40/19,724,426.10 = 11,721,943.80/x - Step 3: Cross multiply
13,149,617.40x = 19,724,426.10 × 11,721,943.80 - Step 4: Simplify right side
13,149,617.40x = 231,208,614,231,453.22 - Step 5: Solve for x
x = 231,208,614,231,453.22/13,149,617.40 - Step 6: Final answer
x = 17,582,915.70
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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.