Finding the Fourth Proportional to 20,220,206.80, 30,330,310.20 and 15,437,237.80
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Solution
The fourth proportional to 20,220,206.80, 30,330,310.20 and 15,437,237.80 is: 23,155,856.70
Step by Step Solution
- Step 1: Write the proportion equation
20,220,206.80 : 30,330,310.20 = 15,437,237.80 : x - Step 2: Convert to fraction form
20,220,206.80/30,330,310.20 = 15,437,237.80/x - Step 3: Cross multiply
20,220,206.80x = 30,330,310.20 × 15,437,237.80 - Step 4: Simplify right side
20,220,206.80x = 468,216,211,105,165.56 - Step 5: Solve for x
x = 468,216,211,105,165.56/20,220,206.80 - Step 6: Final answer
x = 23,155,856.70
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1.5x scale
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.