Finding the Fourth Proportional to 15,322,920.96, 21,145,775.36 and 8,447,649.06
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Solution
The fourth proportional to 15,322,920.96, 21,145,775.36 and 8,447,649.06 is: 11,657,835.33
Step by Step Solution
- Step 1: Write the proportion equation
15,322,920.96 : 21,145,775.36 = 8,447,649.06 : x - Step 2: Convert to fraction form
15,322,920.96/21,145,775.36 = 8,447,649.06/x - Step 3: Cross multiply
15,322,920.96x = 21,145,775.36 × 8,447,649.06 - Step 4: Simplify right side
15,322,920.96x = 178,632,089,300,636.94 - Step 5: Solve for x
x = 178,632,089,300,636.94/15,322,920.96 - Step 6: Final answer
x = 11,657,835.33
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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.