Finding the Fourth Proportional to 20,626,571.98, 28,464,661.42 and 11,334,740.68
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Solution
The fourth proportional to 20,626,571.98, 28,464,661.42 and 11,334,740.68 is: 15,641,937.79
Step by Step Solution
- Step 1: Write the proportion equation
20,626,571.98 : 28,464,661.42 = 11,334,740.68 : x - Step 2: Convert to fraction form
20,626,571.98/28,464,661.42 = 11,334,740.68/x - Step 3: Cross multiply
20,626,571.98x = 28,464,661.42 × 11,334,740.68 - Step 4: Simplify right side
20,626,571.98x = 322,639,555,810,702.44 - Step 5: Solve for x
x = 322,639,555,810,702.44/20,626,571.98 - Step 6: Final answer
x = 15,641,937.79
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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.