Finding the Fourth Proportional to 27,858,811.70, 38,445,160.05 and 15,635,668.70
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Solution
The fourth proportional to 27,858,811.70, 38,445,160.05 and 15,635,668.70 is: 21,577,222.75
Step by Step Solution
- Step 1: Write the proportion equation
27,858,811.70 : 38,445,160.05 = 15,635,668.70 : x - Step 2: Convert to fraction form
27,858,811.70/38,445,160.05 = 15,635,668.70/x - Step 3: Cross multiply
27,858,811.70x = 38,445,160.05 × 15,635,668.70 - Step 4: Simplify right side
27,858,811.70x = 601,115,785,756,388.25 - Step 5: Solve for x
x = 601,115,785,756,388.25/27,858,811.70 - Step 6: Final answer
x = 21,577,222.75
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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.