Finding the Fourth Proportional to 13,728,221.68, 20,584,257.96 and 5,209,156.80
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Solution
The fourth proportional to 13,728,221.68, 20,584,257.96 and 5,209,156.80 is: 7,810,671.32
Step by Step Solution
- Step 1: Write the proportion equation
13,728,221.68 : 20,584,257.96 = 5,209,156.80 : x - Step 2: Convert to fraction form
13,728,221.68/20,584,257.96 = 5,209,156.80/x - Step 3: Cross multiply
13,728,221.68x = 20,584,257.96 × 5,209,156.80 - Step 4: Simplify right side
13,728,221.68x = 107,226,627,325,288.12 - Step 5: Solve for x
x = 107,226,627,325,288.12/13,728,221.68 - Step 6: Final answer
x = 7,810,671.32
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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.