Finding the Fourth Proportional to 20,235,981.60, 30,343,474.80 and 7,449,904.80
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Solution
The fourth proportional to 20,235,981.60, 30,343,474.80 and 7,449,904.80 is: 11,170,992.49
Step by Step Solution
- Step 1: Write the proportion equation
20,235,981.60 : 30,343,474.80 = 7,449,904.80 : x - Step 2: Convert to fraction form
20,235,981.60/30,343,474.80 = 7,449,904.80/x - Step 3: Cross multiply
20,235,981.60x = 30,343,474.80 × 7,449,904.80 - Step 4: Simplify right side
20,235,981.60x = 226,055,998,561,199.03 - Step 5: Solve for x
x = 226,055,998,561,199.03/20,235,981.60 - Step 6: Final answer
x = 11,170,992.49
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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.