Finding the Fourth Proportional to 20,118,158.40, 30,177,336.02 and 7,338,642.60
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Solution
The fourth proportional to 20,118,158.40, 30,177,336.02 and 7,338,642.60 is: 11,007,999.80
Step by Step Solution
- Step 1: Write the proportion equation
20,118,158.40 : 30,177,336.02 = 7,338,642.60 : x - Step 2: Convert to fraction form
20,118,158.40/30,177,336.02 = 7,338,642.60/x - Step 3: Cross multiply
20,118,158.40x = 30,177,336.02 × 7,338,642.60 - Step 4: Simplify right side
20,118,158.40x = 221,460,683,670,886.44 - Step 5: Solve for x
x = 221,460,683,670,886.44/20,118,158.40 - Step 6: Final answer
x = 11,007,999.80
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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.