Finding the Fourth Proportional to 13,819,918.40, 20,731,432.80 and 4,235,220.80
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Solution
The fourth proportional to 13,819,918.40, 20,731,432.80 and 4,235,220.80 is: 6,353,307.80
Step by Step Solution
- Step 1: Write the proportion equation
13,819,918.40 : 20,731,432.80 = 4,235,220.80 : x - Step 2: Convert to fraction form
13,819,918.40/20,731,432.80 = 4,235,220.80/x - Step 3: Cross multiply
13,819,918.40x = 20,731,432.80 × 4,235,220.80 - Step 4: Simplify right side
13,819,918.40x = 87,802,195,408,362.23 - Step 5: Solve for x
x = 87,802,195,408,362.23/13,819,918.40 - Step 6: Final answer
x = 6,353,307.80
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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.