Finding the Fourth Proportional to 13,903,988.40, 20,857,537.80 and 4,319,290.80
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Solution
The fourth proportional to 13,903,988.40, 20,857,537.80 and 4,319,290.80 is: 6,479,419.32
Step by Step Solution
- Step 1: Write the proportion equation
13,903,988.40 : 20,857,537.80 = 4,319,290.80 : x - Step 2: Convert to fraction form
13,903,988.40/20,857,537.80 = 4,319,290.80/x - Step 3: Cross multiply
13,903,988.40x = 20,857,537.80 × 4,319,290.80 - Step 4: Simplify right side
13,903,988.40x = 90,089,771,130,192.23 - Step 5: Solve for x
x = 90,089,771,130,192.23/13,903,988.40 - Step 6: Final answer
x = 6,479,419.32
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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.