Finding the Fourth Proportional to 13,698,919.26, 18,903,468.15 and 7,587,216.54
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Solution
The fourth proportional to 13,698,919.26, 18,903,468.15 and 7,587,216.54 is: 10,469,782.58
Step by Step Solution
- Step 1: Write the proportion equation
13,698,919.26 : 18,903,468.15 = 7,587,216.54 : x - Step 2: Convert to fraction form
13,698,919.26/18,903,468.15 = 7,587,216.54/x - Step 3: Cross multiply
13,698,919.26x = 18,903,468.15 × 7,587,216.54 - Step 4: Simplify right side
13,698,919.26x = 143,424,706,211,043.19 - Step 5: Solve for x
x = 143,424,706,211,043.19/13,698,919.26 - Step 6: Final answer
x = 10,469,782.58
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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.