Finding the Fourth Proportional to 20,018,955.92, 27,649,114.44 and 13,173,993.68
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Solution
The fourth proportional to 20,018,955.92, 27,649,114.44 and 13,173,993.68 is: 18,195,217.59
Step by Step Solution
- Step 1: Write the proportion equation
20,018,955.92 : 27,649,114.44 = 13,173,993.68 : x - Step 2: Convert to fraction form
20,018,955.92/27,649,114.44 = 13,173,993.68/x - Step 3: Cross multiply
20,018,955.92x = 27,649,114.44 × 13,173,993.68 - Step 4: Simplify right side
20,018,955.92x = 364,249,258,890,156.75 - Step 5: Solve for x
x = 364,249,258,890,156.75/20,018,955.92 - Step 6: Final answer
x = 18,195,217.59
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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.