Finding the Fourth Proportional to 15,314,992.02, 21,134,828.61 and 8,439,720.66
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Solution
The fourth proportional to 15,314,992.02, 21,134,828.61 and 8,439,720.66 is: 11,646,891.45
Step by Step Solution
- Step 1: Write the proportion equation
15,314,992.02 : 21,134,828.61 = 8,439,720.66 : x - Step 2: Convert to fraction form
15,314,992.02/21,134,828.61 = 8,439,720.66/x - Step 3: Cross multiply
15,314,992.02x = 21,134,828.61 × 8,439,720.66 - Step 4: Simplify right side
15,314,992.02x = 178,372,049,665,376.09 - Step 5: Solve for x
x = 178,372,049,665,376.09/15,314,992.02 - Step 6: Final answer
x = 11,646,891.45
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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.