Finding the Fourth Proportional to 18,432,840.30, 27,649,260.45 and 12,759,470.70
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Solution
The fourth proportional to 18,432,840.30, 27,649,260.45 and 12,759,470.70 is: 19,139,206.05
Step by Step Solution
- Step 1: Write the proportion equation
18,432,840.30 : 27,649,260.45 = 12,759,470.70 : x - Step 2: Convert to fraction form
18,432,840.30/27,649,260.45 = 12,759,470.70/x - Step 3: Cross multiply
18,432,840.30x = 27,649,260.45 × 12,759,470.70 - Step 4: Simplify right side
18,432,840.30x = 352,789,928,588,443.81 - Step 5: Solve for x
x = 352,789,928,588,443.81/18,432,840.30 - Step 6: Final answer
x = 19,139,206.05
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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.