Finding the Fourth Proportional to 15,776,478.99, 21,613,674.17 and 15,186,523.80
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Solution
The fourth proportional to 15,776,478.99, 21,613,674.17 and 15,186,523.80 is: 20,805,439.37
Step by Step Solution
- Step 1: Write the proportion equation
15,776,478.99 : 21,613,674.17 = 15,186,523.80 : x - Step 2: Convert to fraction form
15,776,478.99/21,613,674.17 = 15,186,523.80/x - Step 3: Cross multiply
15,776,478.99x = 21,613,674.17 × 15,186,523.80 - Step 4: Simplify right side
15,776,478.99x = 328,236,577,112,217.62 - Step 5: Solve for x
x = 328,236,577,112,217.62/15,776,478.99 - Step 6: Final answer
x = 20,805,439.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.