Finding the Fourth Proportional to 20,291,756.94, 30,405,727.08 and 15,691,971.06
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Solution
The fourth proportional to 20,291,756.94, 30,405,727.08 and 15,691,971.06 is: 23,513,281.32
Step by Step Solution
- Step 1: Write the proportion equation
20,291,756.94 : 30,405,727.08 = 15,691,971.06 : x - Step 2: Convert to fraction form
20,291,756.94/30,405,727.08 = 15,691,971.06/x - Step 3: Cross multiply
20,291,756.94x = 30,405,727.08 × 15,691,971.06 - Step 4: Simplify right side
20,291,756.94x = 477,125,789,397,618.31 - Step 5: Solve for x
x = 477,125,789,397,618.31/20,291,756.94 - Step 6: Final answer
x = 23,513,281.32
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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.