Finding the Fourth Proportional to 18,214,712.40, 27,313,774.20 and 8,112,133.20
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Solution
The fourth proportional to 18,214,712.40, 27,313,774.20 and 8,112,133.20 is: 12,164,505.79
Step by Step Solution
- Step 1: Write the proportion equation
18,214,712.40 : 27,313,774.20 = 8,112,133.20 : x - Step 2: Convert to fraction form
18,214,712.40/27,313,774.20 = 8,112,133.20/x - Step 3: Cross multiply
18,214,712.40x = 27,313,774.20 × 8,112,133.20 - Step 4: Simplify right side
18,214,712.40x = 221,572,974,505,123.44 - Step 5: Solve for x
x = 221,572,974,505,123.44/18,214,712.40 - Step 6: Final answer
x = 12,164,505.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.