Finding the Fourth Proportional to 20,430,262.16, 28,193,758.44 and 11,728,995.92
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Solution
The fourth proportional to 20,430,262.16, 28,193,758.44 and 11,728,995.92 is: 16,186,012.45
Step by Step Solution
- Step 1: Write the proportion equation
20,430,262.16 : 28,193,758.44 = 11,728,995.92 : x - Step 2: Convert to fraction form
20,430,262.16/28,193,758.44 = 11,728,995.92/x - Step 3: Cross multiply
20,430,262.16x = 28,193,758.44 × 11,728,995.92 - Step 4: Simplify right side
20,430,262.16x = 330,684,477,712,225.56 - Step 5: Solve for x
x = 330,684,477,712,225.56/20,430,262.16 - Step 6: Final answer
x = 16,186,012.45
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1.5x scale
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.