Finding the Fourth Proportional to 18,421,405.20, 27,634,181.40 and 5,641,808.40
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Solution
The fourth proportional to 18,421,405.20, 27,634,181.40 and 5,641,808.40 is: 8,463,347.67
Step by Step Solution
- Step 1: Write the proportion equation
18,421,405.20 : 27,634,181.40 = 5,641,808.40 : x - Step 2: Convert to fraction form
18,421,405.20/27,634,181.40 = 5,641,808.40/x - Step 3: Cross multiply
18,421,405.20x = 27,634,181.40 × 5,641,808.40 - Step 4: Simplify right side
18,421,405.20x = 155,906,756,749,643.75 - Step 5: Solve for x
x = 155,906,756,749,643.75/18,421,405.20 - Step 6: Final answer
x = 8,463,347.67
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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.