Finding the Fourth Proportional to 20,179,448.70, 30,348,889.20 and 18,106,828.80
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Solution
The fourth proportional to 20,179,448.70, 30,348,889.20 and 18,106,828.80 is: 27,231,771.75
Step by Step Solution
- Step 1: Write the proportion equation
20,179,448.70 : 30,348,889.20 = 18,106,828.80 : x - Step 2: Convert to fraction form
20,179,448.70/30,348,889.20 = 18,106,828.80/x - Step 3: Cross multiply
20,179,448.70x = 30,348,889.20 × 18,106,828.80 - Step 4: Simplify right side
20,179,448.70x = 549,522,141,014,569 - Step 5: Solve for x
x = 549,522,141,014,569/20,179,448.70 - Step 6: Final answer
x = 27,231,771.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.