Finding the Fourth Proportional to 19,868,563.20, 27,418,864.20 and 12,027,971.28
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Solution
The fourth proportional to 19,868,563.20, 27,418,864.20 and 12,027,971.28 is: 16,598,749.88
Step by Step Solution
- Step 1: Write the proportion equation
19,868,563.20 : 27,418,864.20 = 12,027,971.28 : x - Step 2: Convert to fraction form
19,868,563.20/27,418,864.20 = 12,027,971.28/x - Step 3: Cross multiply
19,868,563.20x = 27,418,864.20 × 12,027,971.28 - Step 4: Simplify right side
19,868,563.20x = 329,793,311,127,820.12 - Step 5: Solve for x
x = 329,793,311,127,820.12/19,868,563.20 - Step 6: Final answer
x = 16,598,749.88
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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.