Finding the Fourth Proportional to 20,121,165.30, 27,766,768.74 and 11,749,973.28
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Solution
The fourth proportional to 20,121,165.30, 27,766,768.74 and 11,749,973.28 is: 16,214,706.55
Step by Step Solution
- Step 1: Write the proportion equation
20,121,165.30 : 27,766,768.74 = 11,749,973.28 : x - Step 2: Convert to fraction form
20,121,165.30/27,766,768.74 = 11,749,973.28/x - Step 3: Cross multiply
20,121,165.30x = 27,766,768.74 × 11,749,973.28 - Step 4: Simplify right side
20,121,165.30x = 326,258,790,766,939.25 - Step 5: Solve for x
x = 326,258,790,766,939.25/20,121,165.30 - Step 6: Final answer
x = 16,214,706.55
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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.