Finding the Fourth Proportional to 18,546,420.21, 25,564,497.39 and 14,619,777.12
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Solution
The fourth proportional to 18,546,420.21, 25,564,497.39 and 14,619,777.12 is: 20,151,988.89
Step by Step Solution
- Step 1: Write the proportion equation
18,546,420.21 : 25,564,497.39 = 14,619,777.12 : x - Step 2: Convert to fraction form
18,546,420.21/25,564,497.39 = 14,619,777.12/x - Step 3: Cross multiply
18,546,420.21x = 25,564,497.39 × 14,619,777.12 - Step 4: Simplify right side
18,546,420.21x = 373,747,254,026,621.69 - Step 5: Solve for x
x = 373,747,254,026,621.69/18,546,420.21 - Step 6: Final answer
x = 20,151,988.89
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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.