Finding the Fourth Proportional to 13,605,659.12, 18,776,239.62 and 7,410,891.98
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Solution
The fourth proportional to 13,605,659.12, 18,776,239.62 and 7,410,891.98 is: 10,227,265.17
Step by Step Solution
- Step 1: Write the proportion equation
13,605,659.12 : 18,776,239.62 = 7,410,891.98 : x - Step 2: Convert to fraction form
13,605,659.12/18,776,239.62 = 7,410,891.98/x - Step 3: Cross multiply
13,605,659.12x = 18,776,239.62 × 7,410,891.98 - Step 4: Simplify right side
13,605,659.12x = 139,148,683,614,416.27 - Step 5: Solve for x
x = 139,148,683,614,416.27/13,605,659.12 - Step 6: Final answer
x = 10,227,265.17
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1.5x scale
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.