Finding the Fourth Proportional to 13,294,147.05, 18,345,905.16 and 7,182,575.55
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Solution
The fourth proportional to 13,294,147.05, 18,345,905.16 and 7,182,575.55 is: 9,911,944.66
Step by Step Solution
- Step 1: Write the proportion equation
13,294,147.05 : 18,345,905.16 = 7,182,575.55 : x - Step 2: Convert to fraction form
13,294,147.05/18,345,905.16 = 7,182,575.55/x - Step 3: Cross multiply
13,294,147.05x = 18,345,905.16 × 7,182,575.55 - Step 4: Simplify right side
13,294,147.05x = 131,770,849,808,921.97 - Step 5: Solve for x
x = 131,770,849,808,921.97/13,294,147.05 - Step 6: Final answer
x = 9,911,944.66
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1.5x scale
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.