Finding the Fourth Proportional to 13,410,720.62, 18,513,355.29 and 8,998,867.75
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Solution
The fourth proportional to 13,410,720.62, 18,513,355.29 and 8,998,867.75 is: 12,422,839.95
Step by Step Solution
- Step 1: Write the proportion equation
13,410,720.62 : 18,513,355.29 = 8,998,867.75 : x - Step 2: Convert to fraction form
13,410,720.62/18,513,355.29 = 8,998,867.75/x - Step 3: Cross multiply
13,410,720.62x = 18,513,355.29 × 8,998,867.75 - Step 4: Simplify right side
13,410,720.62x = 166,599,235,863,472.88 - Step 5: Solve for x
x = 166,599,235,863,472.88/13,410,720.62 - Step 6: Final answer
x = 12,422,839.95
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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.