Finding the Fourth Proportional to 27,811,523.09, 38,378,031.04 and 15,421,157.83
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Solution
The fourth proportional to 27,811,523.09, 38,378,031.04 and 15,421,157.83 is: 21,280,160.45
Step by Step Solution
- Step 1: Write the proportion equation
27,811,523.09 : 38,378,031.04 = 15,421,157.83 : x - Step 2: Convert to fraction form
27,811,523.09/38,378,031.04 = 15,421,157.83/x - Step 3: Cross multiply
27,811,523.09x = 38,378,031.04 × 15,421,157.83 - Step 4: Simplify right side
27,811,523.09x = 591,833,673,723,851.62 - Step 5: Solve for x
x = 591,833,673,723,851.62/27,811,523.09 - Step 6: Final answer
x = 21,280,160.45
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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.