Finding the Fourth Proportional to 13,321,416.32, 18,383,554.08 and 7,209,844.76
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Solution
The fourth proportional to 13,321,416.32, 18,383,554.08 and 7,209,844.76 is: 9,949,585.53
Step by Step Solution
- Step 1: Write the proportion equation
13,321,416.32 : 18,383,554.08 = 7,209,844.76 : x - Step 2: Convert to fraction form
13,321,416.32/18,383,554.08 = 7,209,844.76/x - Step 3: Cross multiply
13,321,416.32x = 18,383,554.08 × 7,209,844.76 - Step 4: Simplify right side
13,321,416.32x = 132,542,571,053,864.61 - Step 5: Solve for x
x = 132,542,571,053,864.61/13,321,416.32 - Step 6: Final answer
x = 9,949,585.53
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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.