Finding the Fourth Proportional to 20,089,412.24, 27,729,288.97 and 13,121,155.07
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Solution
The fourth proportional to 20,089,412.24, 27,729,288.97 and 13,121,155.07 is: 18,111,047.56
Step by Step Solution
- Step 1: Write the proportion equation
20,089,412.24 : 27,729,288.97 = 13,121,155.07 : x - Step 2: Convert to fraction form
20,089,412.24/27,729,288.97 = 13,121,155.07/x - Step 3: Cross multiply
20,089,412.24x = 27,729,288.97 × 13,121,155.07 - Step 4: Simplify right side
20,089,412.24x = 363,840,300,488,746.06 - Step 5: Solve for x
x = 363,840,300,488,746.06/20,089,412.24 - Step 6: Final answer
x = 18,111,047.56
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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.