Finding the Fourth Proportional to 19,969,489.40, 27,553,138.16 and 13,772,555.24
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Solution
The fourth proportional to 19,969,489.40, 27,553,138.16 and 13,772,555.24 is: 19,002,845.28
Step by Step Solution
- Step 1: Write the proportion equation
19,969,489.40 : 27,553,138.16 = 13,772,555.24 : x - Step 2: Convert to fraction form
19,969,489.40/27,553,138.16 = 13,772,555.24/x - Step 3: Cross multiply
19,969,489.40x = 27,553,138.16 × 13,772,555.24 - Step 4: Simplify right side
19,969,489.40x = 379,477,117,343,951.94 - Step 5: Solve for x
x = 379,477,117,343,951.94/19,969,489.40 - Step 6: Final answer
x = 19,002,845.28
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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.