Finding the Fourth Proportional to 15,173,118.09, 20,938,860.62 and 8,203,746.87
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Solution
The fourth proportional to 15,173,118.09, 20,938,860.62 and 8,203,746.87 is: 11,321,147.79
Step by Step Solution
- Step 1: Write the proportion equation
15,173,118.09 : 20,938,860.62 = 8,203,746.87 : x - Step 2: Convert to fraction form
15,173,118.09/20,938,860.62 = 8,203,746.87/x - Step 3: Cross multiply
15,173,118.09x = 20,938,860.62 × 8,203,746.87 - Step 4: Simplify right side
15,173,118.09x = 171,777,112,262,436.56 - Step 5: Solve for x
x = 171,777,112,262,436.56/15,173,118.09 - Step 6: Final answer
x = 11,321,147.79
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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.