Finding the Fourth Proportional to 13,118,900.20, 19,686,644.70 and 7,727,540.20
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Solution
The fourth proportional to 13,118,900.20, 19,686,644.70 and 7,727,540.20 is: 11,596,196.02
Step by Step Solution
- Step 1: Write the proportion equation
13,118,900.20 : 19,686,644.70 = 7,727,540.20 : x - Step 2: Convert to fraction form
13,118,900.20/19,686,644.70 = 7,727,540.20/x - Step 3: Cross multiply
13,118,900.20x = 19,686,644.70 × 7,727,540.20 - Step 4: Simplify right side
13,118,900.20x = 152,129,338,322,366.94 - Step 5: Solve for x
x = 152,129,338,322,366.94/13,118,900.20 - Step 6: Final answer
x = 11,596,196.02
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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.