Finding the Fourth Proportional to 13,121,980.05, 19,682,970.08 and 12,324,162.45
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Solution
The fourth proportional to 13,121,980.05, 19,682,970.08 and 12,324,162.45 is: 18,486,243.68
Step by Step Solution
- Step 1: Write the proportion equation
13,121,980.05 : 19,682,970.08 = 12,324,162.45 : x - Step 2: Convert to fraction form
13,121,980.05/19,682,970.08 = 12,324,162.45/x - Step 3: Cross multiply
13,121,980.05x = 19,682,970.08 × 12,324,162.45 - Step 4: Simplify right side
13,121,980.05x = 242,576,120,702,788.66 - Step 5: Solve for x
x = 242,576,120,702,788.66/13,121,980.05 - Step 6: Final answer
x = 18,486,243.68
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Similar ratio
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1.5x scale
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.