Finding the Fourth Proportional to 20,467,351.63, 28,247,422.08 and 11,648,947.09
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Solution
The fourth proportional to 20,467,351.63, 28,247,422.08 and 11,648,947.09 is: 16,076,956.66
Step by Step Solution
- Step 1: Write the proportion equation
20,467,351.63 : 28,247,422.08 = 11,648,947.09 : x - Step 2: Convert to fraction form
20,467,351.63/28,247,422.08 = 11,648,947.09/x - Step 3: Cross multiply
20,467,351.63x = 28,247,422.08 × 11,648,947.09 - Step 4: Simplify right side
20,467,351.63x = 329,052,725,152,618.19 - Step 5: Solve for x
x = 329,052,725,152,618.19/20,467,351.63 - Step 6: Final answer
x = 16,076,956.66
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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.