Finding the Fourth Proportional to 27,995,789.12, 38,634,188.76 and 15,118,733.12
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Solution
The fourth proportional to 27,995,789.12, 38,634,188.76 and 15,118,733.12 is: 20,863,851.58
Step by Step Solution
- Step 1: Write the proportion equation
27,995,789.12 : 38,634,188.76 = 15,118,733.12 : x - Step 2: Convert to fraction form
27,995,789.12/38,634,188.76 = 15,118,733.12/x - Step 3: Cross multiply
27,995,789.12x = 38,634,188.76 × 15,118,733.12 - Step 4: Simplify right side
27,995,789.12x = 584,099,989,170,143.62 - Step 5: Solve for x
x = 584,099,989,170,143.62/27,995,789.12 - Step 6: Final answer
x = 20,863,851.58
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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.