Finding the Fourth Proportional to 20,643,630.36, 28,487,094.30 and 11,475,622.68
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Solution
The fourth proportional to 20,643,630.36, 28,487,094.30 and 11,475,622.68 is: 15,835,739.15
Step by Step Solution
- Step 1: Write the proportion equation
20,643,630.36 : 28,487,094.30 = 11,475,622.68 : x - Step 2: Convert to fraction form
20,643,630.36/28,487,094.30 = 11,475,622.68/x - Step 3: Cross multiply
20,643,630.36x = 28,487,094.30 × 11,475,622.68 - Step 4: Simplify right side
20,643,630.36x = 326,907,145,436,378.75 - Step 5: Solve for x
x = 326,907,145,436,378.75/20,643,630.36 - Step 6: Final answer
x = 15,835,739.15
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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.