Finding the Fourth Proportional to 13,681,049.99, 18,879,557.96 and 7,486,072.79
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Solution
The fourth proportional to 13,681,049.99, 18,879,557.96 and 7,486,072.79 is: 10,330,621.20
Step by Step Solution
- Step 1: Write the proportion equation
13,681,049.99 : 18,879,557.96 = 7,486,072.79 : x - Step 2: Convert to fraction form
13,681,049.99/18,879,557.96 = 7,486,072.79/x - Step 3: Cross multiply
13,681,049.99x = 18,879,557.96 × 7,486,072.79 - Step 4: Simplify right side
13,681,049.99x = 141,333,745,055,901.28 - Step 5: Solve for x
x = 141,333,745,055,901.28/13,681,049.99 - Step 6: Final answer
x = 10,330,621.20
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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.