Finding the Fourth Proportional to 13,694,655.36, 18,900,373.17 and 7,893,478.62
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Solution
The fourth proportional to 13,694,655.36, 18,900,373.17 and 7,893,478.62 is: 10,894,008.47
Step by Step Solution
- Step 1: Write the proportion equation
13,694,655.36 : 18,900,373.17 = 7,893,478.62 : x - Step 2: Convert to fraction form
13,694,655.36/18,900,373.17 = 7,893,478.62/x - Step 3: Cross multiply
13,694,655.36x = 18,900,373.17 × 7,893,478.62 - Step 4: Simplify right side
13,694,655.36x = 149,189,691,410,675.09 - Step 5: Solve for x
x = 149,189,691,410,675.09/13,694,655.36 - Step 6: Final answer
x = 10,894,008.47
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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.