Finding the Fourth Proportional to 28,546,635.54, 39,393,303.30 and 15,493,614.18
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Solution
The fourth proportional to 28,546,635.54, 39,393,303.30 and 15,493,614.18 is: 21,380,615.65
Step by Step Solution
- Step 1: Write the proportion equation
28,546,635.54 : 39,393,303.30 = 15,493,614.18 : x - Step 2: Convert to fraction form
28,546,635.54/39,393,303.30 = 15,493,614.18/x - Step 3: Cross multiply
28,546,635.54x = 39,393,303.30 × 15,493,614.18 - Step 4: Simplify right side
28,546,635.54x = 610,344,642,605,920.75 - Step 5: Solve for x
x = 610,344,642,605,920.75/28,546,635.54 - Step 6: Final answer
x = 21,380,615.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.